Pathetic Vodacom

My normal monthly account was R48.48. At the end of November 2017 they suddenly debited my bank account with R219.48. I asked my bank to reverse the debit. Vodacom people phoned me and said that it is for an upgrade which I never request. They said that they would reverse it and reinstate my original debit order. It never happened. Since January people from Vodacom started phoning me. They phoned me about 10 times up to April. Every person promised me to e-mail me a detailed statement but never did. In April they could however send me an e-mail in which they threatened me that they are going to hand the account over for collection. I once again asked for a detailed statement by e-mail. They received the mail because they even gave me a reference number for my mail 00HF-FQBT. In June I received an email from their attorneys that my account was handed over to them. They are in one word Pathetic