Poor disgraceful service ongoing issue

So today I called up vodacom to find out regarding a complaint I made with the same issue of a refund issue I had in the month of June/July ...I spoke to 3 advisors the first advisor listened to my query and she stated she will compensate me with 1gb of data for the poor experience I had in which I still never got feedback all I got was a sorry come one just a sorry vodacom is seriously becoming a joke these days with the service you receive ....I called back a hour later the second advisor stated that she can’t find any promise the previous advisor made and droped the call and was shouting to her colleagues on the floor and I could hear everything unprofessional and then I called back the 3rd time for the 3rd advisor to tell me I can’t help u the credit was app**** to your bill the refund amount of R500 so I said that’s not the issue the issue I waited an entire month and all I get is a simple sorry if I don’t pay bills I can’t give just a simple sorry I mean I pay for service in which I except to get back...she just told me I can’t help u and spoke over me with everything I said I want this resolved I’m tired of vodacom service....send your guys back to training please not everybody some really helps but most just plain and simple seems as if they never went once for any training