Waiting for credits from Telkom!!!!

I am still waiting for my refund, after having my contract finally cancelled with Telkom, due to not getting any coverage in my area, after the agent told me I would get coverage! I am so frustrated, I don't know how this company can get away with doing so much wrong! I signed up for this contract in March 2017, endless struggles to get it canceled, finally almost by the end of 2018 it was canceled. I returned the modem and was told I will be refunded for the modem and all the months I paid for a contract, I could never use. A contract that was given to me with the wrong information. I got an sms on the 21st of Nov 2018 to say an amount of R1788 will be refunded to me within 7 working days, we are going for 27 working days now, nothing in my account yet. I queried this amount as it is way less than what should be paid back to me, no answer yet. The person who closed my last case did not phone me or tell me how it's been resolved, I just keep getting sms's, case opened, case resolved or closed. How can you leave a client in the dark like this? It's my money, I was told I will be refunded, when am I receiving the money owed to me?? Please get back to me