Poor Service

I still cant understand that a 1 GB data can be depleted in one hour and when I bought the same data using the same phone on the 15 Nov 18 took the whole day and never depleted. I ask Vodacom they tell me about my device and its my fault and I ask how no answers. This is not the first time and the worst part my airtime also ran out without any notification from Vodacom.

Considering the amount of money I use to buy data that deplete in an our is becoming unbearable. What is wrong with Vodacom? ICASA please help us. I have been using Vodacom for years and now Its time.