Vodacom Data Contract

I had a 24 month contract with Vodacom for data at home (5G per month). They phoned me (April 2019) before the contract ends (June 2019) asking whether I want to upgrade, I told them no since I already have another new contract with Borderinternet for unlimited G's per month. My complaint is that they kept on deducting monthly charges after June i.e. July and August despite me personally phoning them twice and telling them I do not want to extend the contract. By the way they claim I must cancel the contract otherwise it just carries on!! What is the use of labelling the contract a 24 month contract if it carries on regardless, they did not provide me with copy of the contract or ever explained the clauses in the contract! On top of this they have not refunded me the 2 months of payments, R400, despite their promises.

Be very careful when signing a contract with them!