Unresolved issue from 2016!

LTE product sold to us not checking the coverage in our area. We cancelled and they confirmed they received it. A year later, they still debited our account. After endless calls and emails they still were not able to sort this out. The contract ran out in December which means at least the debit orders stopped. But I have been paying for a product I did not have or use for sixteen months!! I want my credit paid back to me. I have lodged a complain on HP in Aug 2017, one lady came back to me and said she will send me an email to assist, I am still waiting for her to send me that email. I need someone competent to sort this out. I will not let Telkom take my money like they take millions of others. I want the refund sorted out - soon!! Not in another year's time. P.S The rating of one star was too much, but unfortunately I could not proceed without rating. Telkom do not deserve that star.