Bad attitude received regarding data billing query

I wanted to know why my data bill was high only to find that I was charged because as Dyllan said I was charged because of my bundles were depleted. I get warning SMS if my bundles are becoming less like I go on 25th March @17:23 indicating that I was out of bundles. What I needed for Dyllan to provide was proof that such SMS was sent ie.a screen dump to be mailed to me only to be told that I ace no privy to their applications. I don't want any applications I want proof that such warning was sent in order to have this matter resolved. If such proof can't be provided I request that my account be credited. I have been loyal Vodacom customer but to be treated with such attitude that I need to go to their offices to verify that. I don't have such luxury to be send from pilar to post. I can't wait foe my contract to come to end so as to move to another service provider. I am still waiting foe the supervisor to call till now since I requested to speak to one.