Account problem with Supersonic

Please can someone contact me from the Supersonic accounts department. In November I changed over from LTE to fibre, when the technician was there, he asked them to cancel and migrate my account to fibre. In December I got a bill for R2997, on the 28/12/2021 I could not get through on the landlines, I sent a message on Facebook messenger, sent more messages through the month of January, my account was being investigated. On the 09 February I phoned and spoke to someone who informed me that I was being charged for both LTE and fibre and that the LTE package had never been cancelled. He was going to arrange a credit, reference numbet Cas-973992-x8b8b6. This month it has now gone up to just under R5000 and no credit has been passed🤦♀️please can this be sorted out as a matter of urgency!