Horrible admin and sneaky bank ever

So i have been calling to cancel my credit card with these guys. they have the most horrible admin ever, they don't even read their emails. For some weird reason i receive their emails and they don't receive mine. ooh wait they choose which of mine they want to read and action. I want them to please stop the nonsense and cancel the credit card and refund me all the bank charges that they have charged since i asked for a cancellation. the last person i spoke to was a person called Ubuntu ref ***. then they block all my transactions except for their bank charges. this is theft!!