I DO NOT OWE YOU MONEY!

In September last year I opened a contract with Telkom Northgate (8ta) for a LTE server and internet package for my home computer. We ran the necessary checks to see if my address had signal and according to Telkom's computer I was in a prime position with full signal, however, when I returned home and connected the LTE server I had weak signal and could not connect to the internet. After a sim card swap and several calls to the technical centre and several visits to the 8ta shop at Northgate, I cancelled the contract and gave back the LTE server as the problem could not be resolved. The contract was cancelled within 7 days of inception and according to the contract if you cancel ,within 7 days there are no penalties. Telkom refunded me my money (case number ***1) and I thought all was fine until Telkom deducted R3273.78 from my account in December 2014 which I had reversed. In January Telkom deducted R1550.00 from my account which I again had reversed and now I am being threatened that I will be black listed if I do not pay. I DO NOT OWE YOU ANYTHING, the account was cancelled within 7 days of inception. The account number is ***. Please stop harassing me!