Remember that bank transfers are reversible but Bitcoin transactions aren't. But it won't anymore be on the platform when the buyer requests from his/her bank that the transaction be reversed. That's why you also need to be very careful in choosing who you deal with.
This one scares the hell out of me. I never thought of this ever since I engaged in P2P transactions. Wait a minute, can banks still be so careless in this present age to be reversing transactions anyhow unless they trust the integrity of the customer 100%?
I guess this can't happen in my country. Banks and financial institutions are now more clever not to honour such transactions without proper investigation, and if they must investigate, they must first contact the beneficiary bank, and from there, the transaction would be revealed by the beneficiary customer. Bank and Fintechs in my country are now warning when you want to send money that the transaction can't be reversed.
Technically, this has a meaning and no system will be so irreversible, but such is invariably serving as a warning and means that the reversal can't be automatically commanded without a review. This is even if you guys are using the same banks.
Bank reversals are more common, now more than ever, with online banking, credit and debit cards, online shopping, phishing scams through email and SMS and whatnot, scams, and so on. It's going to be on a case-to-case basis. Some will be reversed, some not. Some easily reversed, some require you to submit documents and screenshots and other proofs. Banks have dispute officers and analysts for these requests. They're strict, of course, but it doesn't mean they're making the right decisions all the time.