Pathetic service from Vodacom customer care depart

I called into your call centre yesterday the 28/03/2016. My query with your consultant was that my data has ran out and I only received 400mb this month instead of 700mb that I usually get. before even looking at my account she tells me Im on smart S package therefore only get 200mb. I told her look into my account and she will see I get a promotional 500mb. She said oh yes now i see you did get 700mb and you used it. I told her on my vodacom app it says 400mb was given. she insists 700mb was given. Then I told her my bill is showing R390 so far used she says it is correct . I asked her howcome as I still have free minutes and my data usage is R5 so far. She then said yes it is wrong was suppose to be R303 . I told her go and have a look at my bill every month it comes to R239 and now she telling me it is for my handset added that why it is R303. This lady did not know anything she kept me on the phone for 20 minutes and does not know anything. I asked her do you know what you are talking about .I asked her did she have training she said do not talk to me like that and cut the call on me before asking for the manager. Please rectify my account now and my billing is R239 a month