Unable to assist

Four months ago I complained about my wi-fi keeps on going on and off. I phoned 10212 about 4 times (first they reset, then asked me to put on and off, then to take out the filter and so on and so on. They were very helpful, BUT IT DID NOT WORK. The last lady suggested I the the D-Link to Telkom. They tested it. They informed me the modem is not working anymore and that my contract has expired and I needed to take out another contract with a new modem. Which I did. IT STILL DID NOT WORK. In the meantime I also bought new phones!! (R600 later) Then 10212 suggested we call out a technician. Which I had to pay R266 excl, vat. They tested and said everything on Telkom's side was fine and my alarm is the problem. I changed my alarm system from landline to radio (another R500!!!) AND THE PROBLEM IS STILL THERE!!! CANT TELKOM FIX MY PROBLEM!!!! I dont even want their contract anymore. Where/Who can I go to to get the 2 year contact, that was sold to me under false information, terminated! Its a miracle that I could stay this long on the wi-fi and not be cut off.