Really bad service

My wife Salomi Mc Kuur has been trying to get feedback wrt our television that was taken in for repairs. To this day we have not received any feedback from Teljoy and each time we call them they confirm that they will call us back but instead never call back. We have received a sms from Hisense confirming that the television has been repairs. We cannot see why we would need to pay for something we don't have and refuse to pay the instalment for the month that has passed without a television or even a loan television. This service from Teljoy is really bad, to date we have been sitting without a television and we still cannot get any positive feedback from Teljoy.