simcard swap

I called MTN(173) on Monday the (03/08/2015) to do a SIM CARD SWAP, since I lost my phone. I called on the new CARD number ***) to asked for my old number ***) and they (MTN) asked me to fax them supporting documents on the following number ***) in order for them help me, but I've been waiting ever since to connect to my lost number. When I try to call MTN, I get nothing but attitude from their call center agents. This is really pathetic service to say the least. My alternative number is ***)