Incorrect Billing due to Non-Cancellation of Insurance

My girlfriend and I had a contract of two phones which ended in January. The contract was under her name and insurance was taken for my phone (IMEI: ***). We later called Finrite Administrators early Feb to cancel the insurance are still being billing. As a result, we reversed the debit orders because according to us, the contract we had with Telkom has lapsed.

We were still being debited and on numerous occasions, contacted Telkom to query the constant debit orders but we were told it the insurance bill. I called the Finrite administrators to cancel but no luck.

The bill is now R556 with the possibility of accumulating further charges that we are not willing to pay as advised by our lawyer because the contract has lapsed and we canceled the insurance. The Telkom account number we referring to is ***.

Can we please be urgently assisted in this matter.