Bis contract cutt off everymonths.M ****ed off nw

I've been calling,emailing complaining to vodacom but no help I am still wondering if this service provide real care for their client or thy all spread liers in their adverti*****t as now it the 6th months same problem.am on uChoose R50 contract tht goes with free BIS&Internet evermonths on the 31th I run out of BIS. I have to make harsh calls 10 o 15 tym in order for this to be sorted I don't Why as my contract will expire on 2016 but everymnths m suffering like a prepaid client,wat real **** me off is it now the 2nd day no 1 ever called me or explain as I've been calling them requesting answers.I pay for full months but I am only being getting bis for half a months as I am wasting my time,energy,internet to make such stupid calls n emails.For real Why thy Call this ******* a contract? I want them to cancell this stupid Contract & Put me back on Prepaid as I don't wat so hard to sort this as from September now it Jan am only receiving Aitym no Bis my main Concern for this contract was to get BIS if their failing to do that it must be cancelled.thy failed to provide excellent client service.****** off by Poor Service,the ref no I was given but no 1 ever called me : this the 6th mnt