Hostage to a contract with MTN who do not respond to problems. Please cancel my contract

MTN are fully aware of the problems of the problems in the Kameeldrift East area. I have kept a log of the complaints sent to them. I have sent them test results. I have informed them that the matter has been reported to the ISPA, the consumer council and to Hellopeter. Other than a reference number, there is no response. I have had to by a a router and data from another ISP to be able to do my work. MTN do not care.