Unhappy client

Kindly assist I have a problem with Telkom. I have a contract with them and I pay R95 monthly. In January I received an invoice it says on the 31 January 2023 R122 will be deducted on my account. In February the invoice was R194, March invoice was R491 so I called them the lady who was assisting me said I had subscription that I don't know about.

It was deducting R3 daily she assured me that she cancelled the subscription. Then on the 4th of April I have received an envoice of R542. The reason why I am writing this email I need you to help me get the clarity of why am I paying different amounts that we did not agreed on. And to get my money back.

I earn R2 200 monthly I have a child and a family who depends on me so if they deduct so much money, how am I going to survive.