Vodacom perthic service

Its now been 4 months with no help and numerous calls and emails so still help. I have been paying R1000.00 a month and have had zero service or response from Vodacom. My current speeds I get is 0.02mbp. I have tried to cancel this contract but even that cannot be done. I have never received worse service than this ever before. There is only on department that can be called and they do not deal with cancellations. Every person you speak to wants me to send and email to VBcancellations. I must have sent over 50 emails and none have of them have helped. I dont even get a response.