Data theft and poor service

I got notification this morning that I ran out of data after just checking and seeing I had 69mb. Then I go on my app and purchase 250mb and less than 5min later again my bundle was depleted. I called once I realized and spoke to Charlotte in solutions. She was so uninterested and tried to tell me how to switch off my data on my apps when I’ve never had this issue before she persisted. I kept saying I know my phone and nothing has changed in the last few hours so why. She could not answer me. When she called the afternoon she said the system was down and I must go to Apple. Pathetic service and something must be up because when I had purchased another 250mb later on that was also depleted and all my data was off. Where is my data Vodacom and get consultants who actually want to help. I’m annoyed so much money on data that was just ****** from me.