Vodacom is a *****!!

My mother has been trying to cancel a contract for the last 6 months with no luck! The contract finished 18 months ago and she is only getting charged for her minutes and data now which is R1350 per month. For the last 6 months she has made dozens of phone calls and every time she is told the contract has now been cancelled but she still gets billed every month!! She has paid over R8000 in the last 6 months for a contract she no longer needs! This is a Vodacom Red plan which is supposed to be a business account with better service but clearly this is not the case. Vodacom your service is shocking and I am now taking the route of getting my lawyer to resolve this........... poor, poor, poor service Vodacom!!!!!!