I registered and topped up on the 6/10/15 and i bought the £18 goodybag which gave me 6GB of data. I set a warning limit on my phone to alert me once id teached 4GB. It hasnt reached anywhere near that at all and in my GG profile its saying i have 1.16GB left. How? It's only been 12 days.
Some background apps tend to use data in the background even when you are not on them therefore using most of your allowance, this could be the issue. If you contact an agent they'll tell you where your data was used.
Hi, its more than likely background data updating apps or running apps but only the agents can check if the allowance showing is wrong or correct. It might be worth contacting them to check tho https://giffgaff.com/support/ask