Not Happy

I purchased R149 1GB data this morning with my balance of R375 from the self help *111# and received an error that the purchase did not go through tried it the 2nd time only to get the same error again and now I tried to purchase again and I get the notification that I do not have enough airtime to purchase and I check my balance to find that both purchases made earlier were succeful even though you stupid selfhelp gave me an error. im sick n disgusted of vodacom and cannot take this **** anymore im counting the months until my contract expires after that I'm not renewing with vodacom u service is poor and your rates are ridiculus. I actually would appreciate it if the duplicate R149 purchase can be reversed back to my airtime balance if its not to much trouble but Im not even holding my breath on that 1 cuz i might just die.