Data bundles

On the 23rd April I bought 1 gig data, 4th May my phone was ****** and had about 700data bundles left. I contacted Vodacom same night, locked my phone. Cellular data was off when my phone was ******,cause I was coming from class. End of May I did sim swipe and when I checked I had 600data bundles. I was using an only nokia phone to check and didn't even need to use my data. I only bought my iphone on 17 june and when I checked I had 0data bundles. I contact the call center and now one was able to assist me. One guy promised to investigate and get back to me but till today iam still waiting. <br> <br> Can someone provide an answer cause I don't understand how data can just disappear without an explanation If youre failing to provide an answer iam porting back to CellC. I cannot stomach such *******<br> <br> My number is ***.