No device, wrong package and black listed

Took a Telkom mobile contract, when it was time for upgrade I upgraded refuse their offers on promotion. But they included then in my package, I was expected to pay three times the money we agreed upon due to the extra things I did not approve. Payed for a few months and lodged a case on the phone and instore but they only assured me that it will be fixed and a year later I could not afford to pay since they could not fix my contract. They took me to the lawyers. The worst part the very same phone I was paying for gave problems and took it in for a quote, came back way too high.... Paid them the money to courier it back till today, they have not brought it back I've been in and out of Telkom branches apparently there's nothing they can do except lodging a case. I don't have the device instead I'm black listed.