Loving crypto.com - bank question

First off, I've really enjoyed crypto.com. It's the first platform I've used and I've learned a lot about crypto. Invested a bit in CRO as well. Question - my husband and I both had fraud alerts put on our cards with our crappy bank. It's weird because we have been buying weekly for a year. Our bank said they were declining "similar transactions" for everyone. Are the banks really going after crypto? There clearly is no actual fraud. Anyway, we are setting up a fiat wallet to bypass the card junk. Has anyone else been through this? Thoughts? I'm in the US.