PATHETIC SERVICE FROM DAMELIN CORRESPONDENCE COLLEGE

I am very dissatisfied with Damelin service, I cancelled my contract with them which they approved and gave me cancellation letters and even requested that I send a few documents so they would refund some of the money I already paid, but they refuse to stop debiting my account this is really damaging mu credit profile to keep reversing these debits I don't know what to do anymore i've wrote to them but with no joy as they do not answer my emails any more :(