day light ******* with Vodacom advance and bad service

I am still complaining about the same thing, I did dats from advance which is 125 and it was gone within minutes. I complained about this preciously and the guy called me when I was rushing to a meeting and he mentioned something about the phone that could be finishing data. No that is not the case because when I buy 100mb data it lasts even for 2 days. so I think the is a trick with this advance. I tried to call back but the number call centre, the guy called again and was in the meeting again and from there on he never bothered.