Vodacom thieving in 2019

Vodacom are a bunch of *******.. 3rd month In a row they charging me for an unknown contract. Also after querying this and having asked to speak to a Team leader they drop the call on me.. Then after another call they say the tl would call me back.. Still no call received! In adition to the above I purchases 30gb Days on a black Friday special whwre you would normally dial *111# or 135.. and guess what! additional fees added to my monthly bill!!! Of 200 odd rand! Unbelievable. I expect an apology and explanation from your director as well. Thieving in the year 2019 is unacceptable! I ought to lay ******** charges!