Data loss when connected to WiFi - 2nd time

<p>Two weeks ago i complained that my data disappears randomly throughout the day in spurts even though I would be connected to WiFi the entire day. Within the space of 5 mins, I would get notifications and I would lose 200mbs even though I would be connected to WiFi the entire duration. After a technician checked my settings (I'm also very tech-savvy so understand what needs to be selected/deselected) and after calling back and forth for a week to resolve the issue, I was reimbursed with 1GB data.</p> <p> </p> <p>Yesterday, the same thing started happening - 100MB gone within 4 hours even though I had been connected to WiFi the entire time (I have screenshot prrof). My WiFi assist is off, and there should be nothing using my data as WiFi usage is meant to take preference? After being a loyal Vodacom customer for the last 10 years, I am considering leaving.</p> <p> </p> <p>This is terrible, and I know a few people that are experiencing the same issue so some assistance would be appreciated - I am not willing to go through the whole process weekly!</p> <p> </p>