Pathetic service delivery

I am sick and tired of Vodacom as they have absolutely no urgency to their clients problems. Everytime you call for an issue it's stays 48 hours. I haven't received service for almost a month of querying my problem and everytime i call its just another 48 hours. But every month they expect their payment or they put your service on hold. What can we do as consumers to put their damn payments on hold without being penalized for it.