I have been gamstopped over the last few years but been using different betting accounts in different peoples names but still depositing with my bank is there a case for me to fight getting my money back as they shouldn’t be letting me deposit in the first place
You started this by telling us that you had "been using different betting accounts in different peoples names". That is the very definition of "gaming the system", or one of them. Best not to be too precious about things when what you're basically saying is "I've been a cheat and a fraud, can I get a refund?"