No Personal assistance to solve a problem

The executor of my husband and I have been struggling more than a month to migrate his one contract number to pre-paid. A lot of mails had been sent and telephone calls made to MTN. You are "helped" by a different person and receive a new reference number each time. I phoned 135 but there is no option to assist with migration, the call center consultant referred me back to legal / deceased estates. A lot of emails were sent. The consultants at the MTN store, are also unable to assist as they say the system still shows the number as not available and some say that is now a pre-paid number, but the Sim is still not connected. They were also not successful in contacting the legal department or the 135 number from the MTN store as there is no answer and you are finally cut off after following all the steps. I am so frustrated!

Please assist urgently with the activation and migration of the *** number to pre-paid.