Very strange data usage.

[GiganticGoat]

Hi there. Upon checking the myo2 app it appears to show that my data usage is exceptionally high. Obviously I have not used 10,000 TB in 10 days. Also I upgraded my iPad yesterday on a different number and that appears to have used 100GB (according to myo2 not the iPad) in an hour of mobile data being turned on. 

is this a glitch? 

[Enlli]

My O2 is often up the wall.

Not one of my past data usage figures is  anywhere near correct. 

I've months when I used next to nothing and others where I'm over allowance!

I'd phone, but I've got a life to live.