Furious

Mr price had huge problem with them I opened and account with them 2months back they gave me credit of 1400 first few days after opening the account they sent me an statement saying I'm owing 280 without me buying anything using the card iwent to the shop they told me some insurance on my account told them to remove the they fill afore for me sign for canceling the insurance but they say it will take 31day for cancelation ok send emails tried calling no help went to the shop again this week now I'm owing half of the credit limit they gave me again I haven't use or buy anything using the card I've called them emailed them but now since there's no help, and this is affecting my credit score cause how can I pay for something ididnt use