Update on this issue: I tried also T-Mobile and Tele2 (as Ben also belongs to T-mobile) and all refuse a subscription with the bunq IBAN. Tele2's support confirmed to me that this sort of checks whether to accept a new customer happens on T-mobile's side, so it seems to be a T-mobile policy to not allow bunq. I wonder how many people are actually affected by this ...

@JohnDo#216876 So after 1.5 weeks I still haven't received an answer, I think there won't be coming one either. So I guess the next step is complaining at DNB. What is to take into account for that? I have saved the email communication into a pdf to attach. Thank you for your suggestion that you can make the complaint! I can send you the document if you would still be up for that. I will also continue the support issue I have with bunq regarding this topic to update them on the situation, so maybe they can become active too.
Please let me know what you think is best to do, thank you!

Update: I have called the Customer Care Department at Ben, and they have explicitly confirmed their policy of not accepting bunq accounts for subscriptions, but could not answer my questions about the reasons, especially after I pointed out the legal situation. Apparently this question is dealt with by the financial department, which is not reachable by phone, but will receive emails that are sent through a support case that deal with such an issue. I have pointed out to them the legal situation regarding EU Reg. 260/2012 and the possibility of them being reporting by me or bunq. Let's see what comes out of that, I am somehow afraid of that they will just ignore my message.

@JohnDo#216839 Thank you! I called the number you mentioned, unfortunately people there had to clue about how to approach the issue, even after "asking the boss", I was told to solve the issue only per email communication. They told me that the they know they have to accept all Dutch banks (actually they should accept all SEPA banks ... but I guess bc if iDeal), but they could not do anything about my case. I will see if they answer to my email, next step then is mentioning EU regulation No 260/2012 ... I find this very ridiculous to be honest.

Even now I have that exact problem with Ben.nl, they reject my order after identifying through iDeal, and tell me I should use another account than Bunq. Anyone here knows what I could do?

Hi everyone, Hi bunq support,
I live in the NL and use my bunq account for literally everything, even contracts from Germany where I lived before. But now, I wanted to obtain a Dutch Sim-only contract with BEN.nl, and they repeatedly refused my order pointing to a low rating for credits for (even though I didn't order a phone), and after asking more questions, I was told that the bank account is the problem. They literally told me to use another bank for my subscription at Ben than Bunq. See their answer in the attachment.
Does anyone know what is the problem? Bunq support, can you help with solving that issue?

Thank you very much!

Best regards,
Max