Inconvenienced By Vodacom

Very disappointed with Vodacom's failure to accept facts and solve my problem. How do you guys close my ticket without solving my problem? All of a sudden I am told my sim card is a data card. I am no longer able purchase voice bundles as I used to . I have presented facts ( my prepaid history ) to sustain my claims that I have been buying voice bundles using the same sim for months .Who tempered with the menu of my number and why is it hard to reverse that to the way it was? I haven't been able to make my usual voice calls for the past two weeks and and I am inconvenienced. May this be fixed ASAP .