Vodacom is making my life miserable

I complained earlier about experiencing network problems, yesterday my family members were trying to get hold of me due to the incident that happened in 1 of my family member from 11:00 to 13:00. On the other side I've been charged data maddly... My contract was changed to save data but now its even worse am using 1 gb per week, I don't know how is it possible because I struggle a lot with my network, whatapp messages will come late etc... Yho I hate Vodacom!!! It makes my life miserable, I pay more for less services. Anyway my contract will end in August... PLEASE START WITH THE PROCESS OF CANCELLING THE CONTRACT, I NO LONGER WISH TO CONTINUE USING YOUR NETWORK... I've heard it!!!!!!!!!