Bad service, *********** people

I just received a call this morning stating i should pay 1900 on my credit card account. When i asked why the lady couldn't answer me or give a break down as I've never paid do much into the card. I was always charged R350 nothing more. I find this to be very strange . I want to know why i must pay so much and what was different from then to now since the payments are more????????? besides this i cant link my app to my phone for 2 months I've been in and out of the store to get assistance . I have called numerous of times no HELP AT ALL i have deleted and installed again i mean what more must i do since no help has been received. I have not had any luck with you guys and I'm extremely upset and all this phoning and wasting petrol up and down to gain assistance ..who is going to compensate this???????????? I've spent more than R600 on petrol driving up and down to different branches .. that's not even the amount of airtime I've used . Don't even ask about the chat service on your app .. people read and don't respond and just let you hang till end of business and boom nothing