credit card not cancelled and now im billed for it

Im so disgusted buy the service from standard bank regarding my blue bean credit card, that was paid in full February this year and according to their consultants the credit card was not going to be reinstated I needed to apply for another credit card if I want one, <br> I accidently I transfer money to that credit in error and called the to get my money back , I was informed that the credit card is owing, this is 10 months later, tried sending endless email request for refund of the amount because the credit card was suppose cxd in feb when it was paid in full <br> i have been sending email and calling the credit card division still nothing happened, iwas told to email letter from lawyers confirming that account was paid still no help.