Lack of service

I have phoned 135 about 8 times today to cancel a contract and hold on for at least 20 minutes each time. I'm at my wits end because stores tell me they cant do it in store as it has to be done bia phoning 135. I am in Pietermaritzburg and have been without power for six days thus making things extremely difficult to get my phone charges elsewhere only to waste my battery waiting yo be answered. DESPERATLEY SEEKING HELP.