Mtn Superflex nonsense

Mtn Superflex is a **** or what?... First time I joined it worked well for the whole month, it's the second month now but it keeps on cancelling itself or migrating me off, I report the issue but no solution is given and I have to pay again to fix it. From the 12th of April I've paid R600 for a R300 plan and this morning it has cancelled itself again so I must pay another R300... Now it's about to be R900 for a R300 service.