very upset customer

I was given a credit card by Fnb. this is now my second time that i am having a problem with this bank. The first time my card was blocked for no reason, this time im told i have a petrol card linked to my profile, which i have not asked for. i have now spent many hours on the phone contacting fnb where nobody can help me. i would be grateful if you go through all my calls to the call center and please contact me back to resolve. this has by far been the worst service i have ever received