Poor and disgusting service from Vodacom

I have cancelled a contract deal with Vodacom and I have been waiting for them for over a month now to come pick up their devices but they never pitched. On the other hand they have debited my account and I never used the devices. I have spoken to the billing department two weeks back they promised that they will not debit. I am now gatfol with their services and planning to stop doing business with them. I have been their loyal customer for more than 10 years and I have never missed a monthly payment yet this is the service I am getting from them. This is *******!!!