Vodacom is the worst service provider

We took out a data contract from Vodacom i n 2016 which was 10g for R299 per month, our contract expired end May and all of a sudden Vodacom decided to take R200 more on my account explaining there was a discount app**** on account which does not apply now, and when we cancelled the contract telling them our wifi doesnt work fro m the 1ste the told us they are going to take my installment again the end of the month after i cant use data the whole of June which they charged me plus again another R200. I will never ever deal with Vodacom again their customer servi e are the worst nobody assisting you. And i will tell all my friends about the bad service i received