MTN processes a porting request i never requested and message arrives when porting department is closed

I had a horrific experience at the hands of mtn when i received this message;

"Y'ello! Request received to port this number to MTN. We will keep you updated on the progress. If invalid request, call ********** 667. Thank you for choosing MTN"

I had never requested to port my Vodacom number to the MTN network hence i was shocked and immediately suspected that there was ***** in operation. I tried to call the number provided in the message that the request was invalid and my horror their porting department closes at 5pm after opening at 8am. Then why send me a message at 6:15pm?

Fortunately Vodacom declined the porting request and I was accordingly notified. What kind of network is MTN? Are they facilitators of ***** in this country through their systems?

I am also baffled by the fact that I never send any porting request from my number and yet a porting request was submitted by MTN to Vodacom. How is it so easy on MTN's part?

Please MTN put your house in order and I hope you investigate this isse thoroughly.