Vodacom sim swap difficulty.

Vodacom sim swap difficulty. Years back while I was still a student my mother took out a Vodacom contract for me, after the contract period she canceled the contract at Vodacom Killarney and requested that the number be put on prepaid. Now I have lost my phone and am unable to do the sim swap because I am told the sim card is on contract and my mom needs to do it, however, my mom is in a different province and Vodacom is refusing for her even to write a letter of authority / affidavid for me to go do the sim swap at a vodacom store by myself.