Very very very bad service. No communication in Telkom between mobile and landline

I wanted a landline after being told there is availability where I stay I took out the contract and waited for the line to be installed after 2 months no service or any line no feedback why. First month my account was debited but I dont have any service. After calling account and billing with no assistance I had to put n stop order and sended cancellation forms in. Never received my money back and the following month after cancellation I received a new invoice with 2 landlines om my account all over again. No person in a Telkom store can assist me and no person on telkom internet call agent or telephone call centre can assist me. What to do? Who can be contacted?