Alarming Usage and Subscription invoice

I had a contract with Telkom, I was paying it as required until my husband lost his job in October 2020 and I couldn't pay the account for 4 months. On the third month I went to the Telkom store because I had some funds and I wanted to pay the account so that my services can be reconnected after they were suspended due to non payment.

I went to the Telkom store and I asked them to print me out an invoice so I can pay the amount. The consultant printed an invoice which reflected that I must pay almost R8000. I paid the required amount and waited for my services to be reconnected.

I ended up making a call to their customer care line so that my line can be reconnected and I was advised that my contract with Telkom has been terminated because of non payment and that my number has been given to someone else.

Then I asked what the huge amount I paid was for, since they can't give me my data for the previous months and that I will never get my number back. She said that I don't have a contract with Telkom anymore as it was terminated and the account is closed.

To my astonishment. The following. Month I received an email from Telkom saying I owe them over R15 000. On the email it said data usage and subscription. It was puzzling how because I was told this number was inactive and was closed.

Now they have debited the whole amount of R15 388.14 from my account and now my account is in the minus. I need to buy groceries and pay school fees for my kids how am I going to do that when Telkom just decides to debit my account without prior warning.