Telkom And Their *****

I bought R 1000.00 airtime in error on the 28th of November 2018. On the 14th of December telkom reversed the airtime back an amount of R 900.00 and closed the case but never refunded me my R 900.00 every time I call them to hear when am I getting my money back they give me different story's. I've emailed all of the following people and got no assistance from them ********** ********** ********** ********** ********** **********

Today (09 January 2018) they decided to surprise me by switching off my contract. When I called them to ask WHY?? They say the system shows No Payment was made for December 2018 however the statement shows payment was made. I don't know what ***** is going on at telkom but something needs to be done.