MTN Incompetency

I have been on a MTN contact sice 1995. On 23/425 Ihad a simswop done by a MTN Manager,Ishmaeel Mahommed(cell number:***) .

Since then I am unable to connect to the network. The simcard number: *** is not the number showing on their system.

It was confirmed by various consultants at their Connectivity department department, that there were actually 2 simswops done on 23/4/25.

I am getting no further assistance although I am on a Sky contract and paying a lot for a service I am not getting.

Time for a network change?