Cell C
Poor Quality of Signal around JHB -Cancel contract

I have been with Cell C for 3 years and never in my life have I experienced such poor quality of calls and signal around JHB and other Gauteng regions. On my hands-free i experience 5 drop calls along the N3 alone. I upgraded recently to a Samsung Galaxy S3, so it is certainly not the phone. I wish for an agent to assist me in cancelling my contract so I can move back to Vodacom/MTN.