Not getting any help at all !!!

I don’t know if you can assist me but the Telkom mobile stores and Customer care lines are of no help since May 2019 .

I took out a 100 gig Wi-Fi_deal two years ago and it cost us R1105.00 a month which then became due for an upgrade , I went in to the store at Eastgate and the lady said to me that I could just upgrade my package To the unlimited Wi-Fi deal for R899.00 which is what we done . So I’m now on a unlimited Wi-Fi package at home all is good however I’m still being billed R1105.00 instead of R899.00 and every time I phone in or go the store I get told they logged a case and escalated it to God alone knows who because we are in Oct almost Nov and I’m still being billed R1105.00 and not R899.00 . Every time I call customer care line a new agent logs a new case I think We sitting on case 40 already ,yet again today I called and again I got told all the previous cases had no information HOW ON EARTH!!!