In correct contract term and empty promises

I made a contract upgrade in December 2013 from a contract that had two cellphone numbers. I requested for one number to be cancelled. Telkom continued billing me for both numbers for over 6 months, I raised the matter with requesting cancellation of on line. They cancelled both lines in August 2014, they further reinstated one line and captured in their system that my contract has started in August 2014. I reported the matter on the 11th of July 2015 ( Case no: ***9), They promised to get back to me in 72 hours ( 3 working days). I gave them a call after 83 hours. I was disappointed to discover that the case has not been attended and nobody knows how long will it take to resolve the matter. I was told to wait for their feedback. Unfortunately I was never informed how long will I wait for the feedback, I should just wait until such time they give me feedback.<br> <br> To me this is unreasonable, I cannot wait forever without being given a turnaround time. I have already waited for over 83 hours! This is the worst customer service I have ever experienced! Clearly Telkom is *****ing away from me by extending my contract for 8 more months based on their reckless mistake, This is wrong!