Migration Failure. Number LOST.

I had my cell number for many years. A few months back i did a migration to RAIN. Recently i bought a new MTN starter pack as i wanted to migrate back to MTN. The starter pack were RICA instore. When the new sim became active, it said not RICA. I then went to MTN at Wonderboom Junction. The lady checked on her system and informed me that all is ok. She said i must do a sim swop after another 24 hours as the card may be faulty. I went back to the MTN store on thursday 30 May. Bought another starter pack to do the sim swop. The gentleman registered the sim an said that i must only put the sim card in the phone today (31 My) witch i did. The number showed full 5g signal. I tried calling the said number , but number showed not available. I contacted the MTN store and explained my situation. The gentleman said that i must remove the sim from the phone for two hours and then put it back. Witch i did. Phone showed full 5g signal once again. I then whent to the phone setting to check the cell number. To my disgust it showed a complete new number.

This is totally not acceptable. As my number are registered as a username on all my accounts and busines websites that i deal with.

Can MTN management please help resolve this problem ASAP?

I was told by the gentleman at the MTN store i must contact customer are an resolve the issue myself. Totally unacceptable.

I tried contacting customer care a few times, but no answer.