WORST SERVICE PROVIDER!!!!

Vodacom is the Worst service provider i've been calling for the past 3 months calls get cut off and they dont call back. I was incorrectly Blacklisted. Since i cancelled my contract they still billed me and even though i sent proof of payment and requested to close the account. Utter incompetence getting paid for not doing you job. I have asked so many times to get cleared or for answers.... no 1 answers or calls or emails. And when I call they cut my call. Or get sent from pillar to post