Unfair Charges

We have an Discovery Credit Card and NEVER used it. then all of the sudden bank charges is added. We have spoken to Discovery many times to cancel but nothing happened. keep n getting sms, mails that ask for payment. Discovery themselves contacted me and told me that it is a problem on Discovery side and that I must ignore all of the messages. and that it will be corrected. Well up until today NOTHING is sorted and the amount is getting bigger and bigger and I still receive mails and sms's. Discovery need to sot this out and clear my name and cancel this card as was requested.