5 users on my account. All have iphones ranging from a 4 to a 6. Over the last 6 months+ data usage has been exceeding shared limits but this is the typical pattern - exceeded data limit by 0.5GB so purchase next increment (say additional 2GB) - that additional 2GB is exceeded in the next 30 day cycle by say 1GB so purchase an additional 4GB - those 4GB are used up in the next 30 day cycle........ What is going on? None of the other users on the account know whether I purchased additional data or not. They are not using their phones any differently and all users are aware of how to limit data usage and they have employed these methods to no avail. Is this an evil Verizon / Apple plot? Anyone experiencing this same issue? Thanks for any assistance.