Pathetic Customer Service

I logged a complaint with Cell C and Mobiware House regarding my number that was given to someone else whilst i was still using the Sim card. I took out a contract a couple of years ago and this year March changed to prepaid. I continued to use this number until one morning i receive a message saying that a sim swap has been done on my number. How is is possible to do a sim swap if I am using the number and what verification was used to do this sim swap.

I logged my complaint received a call a consultant who asked me to contact my Service provider where i had the contract. i done this and copied them in on all emails.

They have not once rep**** or even followed up with to see if this has been resolved. I am now using a temp number ********** 623.

I do not have the names but i do have the email addresses. ********** **********

Please can this be resolved now its been going on for a full month now.