Vodacom not delivering

In the last few months I've had numerous problems with reception in my area of work and at home with my Vodacom phone. The main problem is al the dropped calls that I continuously experience and that has still not been resolved by Vodacom. I logged a fault with Vodacom about this as Vodacom seem to make money out of all the dropped calls and I still haven't had any feedback on this. I subsequently reversed the debit order as Vodacom is not providing the service which I pay for on a monthly basis. I just received and SMS that my outgoing calls bar has been activated which I think is wrong of Vodacom to do. I have always been a loyal paying customer but am fed-up with paying for a service which I am not getting. I think I should refer this matter to ICASA as Vodacom seems to be unable to resolve this matter properly.