Bad service, cancelation = 2 more installments

1 star is honestly too much. I have been a loyal telkom wifi user years. For the last 3 or 4 months my wifi is constantly getting bad network or none at all. The little periods it functions like the product Im paying for should. Telkom does not have Fibre in our area. I do understand this. My problem however, is I am in urgent need of propper functioning wifi. Again telkom does not supply my area (west village Krugersdorp.)with fibre. If I switch my service provider and cancel my contract with Telkom for not delivering a service I pay for in full, they still deduct 2 installments after your initial cancelation request. I can understand if they delivered the service I am paying for.

TELKOM PLEASE ADVISE???