[merb]

in european you can report them if they won't give a good reason, for canceling your contract. You can even complain at your national bank authority. https://eba.europa.eu/consumer-corner/how-to-complain since they are a official bank in europe they would need to give correct info.

[NotPaidToPost]

Just a precision: all these regulations apply to consumers.

A business, whether a company or a sole-trader, is not a consumer.

GDPR applies if you are a sole-trader.

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You could also make a subject access request under GDPR to see what data they have on you.