OUT OF DATA

I upgraded to a new 5GB Data bundle about 3 months ago. The first month I used the modem and I was extremely happy with the speed and after my first month I still had data left on my bundle. For the previous 2 months, the data is used up by the third day after receiving it late. My Data just do not last. This month, I haven't even done upgrades on any of my laptops, but still...the data is finished by the 8th of the month. This is totally impossible!!!<br> I asked a consultant last month to investigate what happened, only finding out today that there was no query logged for my number.<br> Please assist me in getting it fixed!!!