No feedback..EVER..AFTER SEVERAL REQUESTS!!!

This has happened more than once to date. I'll have (for EG) R20 airtime & 50mb then i'll check my balance after being unable to make a call & it will show R0 airtime & 49mb so its not like my data got chowed & I was charged out of bundle. I also know there arent wasp services active (I blocked them)so my question is where the hell does the airtime go?After speaking with an agent Wednesday (***) & letting her know upfront I have data & no wasp services yet R14 of the R20 I loaded vanished she checked&eventually said I should call back as her system hasnt updated. Having worked in customer care years ago for Vodacom I know this can be true so I called back (Atleast 6hours after the incident) later & was told the same thing but the agent logged a case to which still no feedback received. Cell C is cheaper than Vodacom but I never had this happen to me with V not to mention they atleast provide feedback (regardless of how small an issue it is) I am starting to wonder if its even worthwhile being on cell c because not only does their coverage suck(in comparison) but so does their service & SERVICE & FEEDBACK are probably more important than anything else...Price included!