F**k Santander UK

I just had 9 calls today with Santander after attempting to purchase £3000 worth from Coinbase, they blocked the payment and froze my account, they didn’t believe I wasn’t being scammed. I have been buying and selling for 3 years on and off and it took 5 hours to regain access. Barclays closed my account in 2021 for purchasing crypto from binance which I can assume is because of its own controversies. I had to go into branch with payslips and shit to prove my money was mine, I was then investigated by the national crime agency and had my bank account closed????????. I had done nothing wrong and it wasn’t even a large amount.

What am I doing wrong and have others had this problem recently? Best UK crypto friendly banks?