Telkom does it yet again

Telkom changed us to pay as you go in june 2015 due to no coverage which was meant to be without termination charges for the last 4 months they have billed us for the remainder of the contract as they said that we cancelled early.We were told that we are liable for the charge as we still have the handset we have been trying to return the handset and was told that they dont accept handset back and we are liable for the charge after fighting for months they finally came back and said the charges will not be applicable if the handste was returned to the store of purchase within 7 working days we took it back the next day the manager refused to accept it telkom then told us they will arrange with the store for the handste to be handed in they have not gotten back to us since then we have been to the store on 4 occasions and they will not accept the store it is now past the 7 days and yet again we are liable for the charge i have emailed them everyday and got feedback to say that the person dealing with the matter has gone on leave and they dont know what it going on but as it stand now we are again liable for the charge and the total will be deducted yet again month end. Telkom sucks