Are you very consistent with your data usage? Do you have an android phone? Set your data tracker to the correct dates. You should be able to access your last 4 months of usage. If you have kept to your plan data's usage you then may be able to prove that a glitch has occurred. Perhaps @Anonymous can give you the name of the CSA then fixed the glitches in his account and is aware that this kind of glitch can occur but you will need some compelling evidence to prove it if you do not have any screenshots of your account.
Screenshots of you accounts regularly can be your friends, as @Anonymous as proven ;P.
Think of it has downloading a monthly statement. Unfortunately, when addons like that go away there is no where to see it easily. They are just there, used up, then disappear. Going through usage detail history would be difficult (not impossible, but not fun).
@korenish : Something like this happened to me recently. I had asked the CSA's to add the gifts on one account. Well something they did thoroughly gortched my account. Of course they denied anything was wrong or missing. I had a screenshot from not long prior to prove what I had. And I know what I have 🙂 . A more senior CSA fixed it all up. Hopefully you will have a happy ending.
HI @korenish It is dangerous to post your account number here. Please click on the down arrow on the top right of your post, modify and remove the account number
Add-on are gone after they are fully consumed. Please check My Account's usage history page
Also, you can check your Mobile Data usage on your phone to see if it makes sense.
