MTN fail to migrate Nashua Mobile clients Successf

As a Nashua Mobile client I was guarantee that I will be migrated to the MTN base with all my existing contract/business rules I had with Nashua which includes me being a cash client and only paying at the end of the month. Since the migration on the 4th of November 2014 I get softlock every month as MTN is now forcing there business rule on me that I need to pay within 21 days after billing as I am a cash client. I do have the option to become a debit client(yeah right) but that is MTN business rule over and done no matter what I say. I only get pay at the end of the month and I was a cash payment client of Nashua and always only paid at the end of the month and MTN should have changed their system to accommodate that as that is what the legal agreement was that they should migrate all the Nashua clients according to Nashua contract/business rules. MTN is like robots just saying the same story each month and I have even now send the legal department 4 emails and needless to say have not receive any feedback , so I cannot complain about the service as there is no service and no wonder why so many people is porting out from MTN. In 5 days time to get softlock again ***