Now I can not finance my new car, because of them.

Hi, I just want to know if I can get Cell C of my back. They offered me a contract and after less than two months I cancled it in 2016, because of absolute poor service. I had to change of banks just to let them stop dediting on my account and every time they change their refferance after I blocked the previous one. I have pay everything I needed to after I cancled it. Now they send me sms's to say they are going to give me over to the athorities.