***** yet fnb does nothing!!

I recently received an sms stating someone was trying to make a card purchase of R7000 on my account. I followed the sms instructions and indicated that inwas not aware of the card transaction. Another sms said that the ***** department will be in contact with me, I even called and followed the prompts to have a call back yet no one got in contact with me. Keep in mind with every declined transaction, im being billed for that. Ive noticed the declined foreign transactions on my account but never thought it would be *****. So Ive been paying for negative account balances when it wasn't even my fault.

Can the ***** department call me and sort this out because currently my account is negative R107 and rising. I will not pay this amount and I want all the other foreign declined card transactions fees back