Kustom Reviews 

I previously integrated Kustom in to my website and had a great experience from start to finish, so I would highly recommend Kustom. Excellent customer service. You’re able through to someone straight away on live chat or via email. If you encounter any problems there is always someone on hand to help you out. Everything sorted out very quickly and kept updated regularly. Thank you to a great team!

Great Customer Service.

Kustom support is almost driving me half mad. I have never experienced anything like it. Dealing with different support agents that take up to a week to respond, don't even answer all of my questions and apparently have no idea about my previous correspondences with other agents. One agent even told me he couldn't help me because the technical issue I had was not related to Kustom itself. Turned out it actually was, though! He could at least have directed me to someone who was not entirely incompetent. What an absolute mess.

Even better than Klarna!
Really quick and professional help with food follow up on the arrends. Great service!

Support with Kustom has greatly improved compared to Klarna IMO. Less generic answers, faster to get from AI to human, very nice communication skills. Keep up this pace!

I have to admit that I am extremely disappointed. I did not expect to be treated this way as a customer who has been loyal for over 10 years.

The way I was handled, and especially the way certain features were suddenly disabled on my account, is simply absurd. There was no proper explanation, no real support, and no consideration for the long-standing relationship I have had as a customer.

I am writing this as a warning to others: be careful and do not place full trust in large, system-driven corporations like Kustom. Loyalty clearly does not guarantee fair treatment, and decisions can be made without transparency or accountability.

This experience has significantly damaged my trust in this payment system.

No issues and trustworthy

Kustom charged us incorrectly due to a system bug. Despite acknowledging the error in writing, we have waited 12 days without receiving the refund or even a confirmed date. Customer service only offers excuses. Very unprofessional handling of merchant funds.

UPDATE (Feb 5, 2026): After posting this review, the 150 NOK refund has finally been processed. However, it took nearly 3 weeks of constant, manual follow-up from our side to resolve a simple, acknowledged system error.

While the issue is now settled, it is disappointing that a payment partner requires this much pressure to fix their own mistake. I am updating this to reflect that the money was returned, but the initial experience remains poor due to the excessive time and effort wasted on our end.

We’ve been trying to integrate Custom Checkout for our store for over two weeks, and this has been one of the worst support experiences I’ve ever had.

The checkout initially worked perfectly, then suddenly stopped with a 403 error for no reason. I contacted support immediately — one person said one thing, another said something completely different, and a third agent in chat gave a third explanation. After countless emails, promises to “look into it,” and even a phone call, they finally refused to activate the checkout, without giving any clear or logical reason.

We lost nearly two weeks, had to delay our store launch, and could not move forward with our sales because of their inconsistency and lack of professionalism. What’s worse, everything worked at the beginning — which means that if this had happened after launch, we would have lost real customers and revenue.

Extremely poor service, unreliable communication, and zero accountability. If you value your time and your business, stay far away from this company.

This is an absolute disaster! Everything went to hell after the forced migration from Klarna to Kustom. We've been bleeding money and time for months, all because Kustom can't handle basic payouts. Our bank clearly states these are SWIFT payments, incurring €6 fees per transaction, but Kustom's 'support' is either clueless or deliberately unhelpful, insisting they're sending SEPA payments that should be free of charge. We've wasted countless hours and a significant amount of money trying to get a straight answer or a solution, but Kustom's incompetence is astounding. We demand a resolution and a full refund for all the fees we've been forced to pay due to their botched migration and abysmal service. Avoid Kustom at all costs!"

Be careful about this company..!!!
When they switched from Klarna to a custom payment method, they stopped making payments to us, and we haven’t received anything since July 2025. As a medium-sized website(Etnomat), we rely heavily on these payments to operate. Despite their numerous and often irrelevant document requests, we provided everything they asked for. However, their responses have been dismissive and unhelpful, almost as if they’re joking. We’ve sent countless emails and contacted their support multiple times, but they continue to withhold our funds without providing any valid reason.

If they’re holding our money like this, I can only imagine they might be doing the same to others. Based on the comments I’ve read, it seems like a pattern. Holding onto other people’s money like this could make them extremely wealthy or allow them to misuse the funds.
I strongly advise against becoming involved with this company. If anyone needs further clarification, I’m happy to provide more details. Rest assured, we will be taking legal action against them 

They are thief.
They made plenty of problem on my website.
I lost many customer and they just make problem. Im waiting forvtheir support in 3 month.
I want klarna back.
Really worse company i have ever seen.

Kustom "bought" me from Klarna, and now forced me to sign agreements and provide data in order to give me back the money they have stolen from me.