Worst service ever

I took up a data contract in December 2023 which came with a roster for R135 a month. I was promised free service for December and I would only be charged end of January. I was promised an email with all the documents and customer care details and I had 7days cooling off period etc. in January I was charged double and same for February then I reversed double amount charged double so that they only took R135. In March I was charged R135 only but my service was disconnected, I tried calling 081 135 so many times all in vain. Today I wake up to a notification of R756 being debited from my account by Telkom. Telkom never reached out to explain why they suspended the service. Never even sent me the contract in writing or verbally. I am so angry that they feel they can do as they please with my account. I don’t even know my account number all I have is this reference I see on my bank statement Tellommobi***