Migration not complete

I requested my line to be migrated to a lower package before the month ended due to affordability. I was assured it would be done by the 30 November. To my surprise I received the full benefits of my old package this morning. When I phoned customet care this morning I am told that there is nothing on the system for a migration and an email with be sent to migrations to contact me back. This is totally unacceptable. Now I must be inconvenienced because I will be billed the full amount then wait for Cell C because of their processes to be refunded. Please get someone to call me to have this resolved immediately.