I didn't knew about these resets up until a few days back... and every time they used to reset these limits, I thought I was going crazy... the usage numbers just didn't match. And the weekly end window just kept pushing ahead by a day or a few... just the right amount of deviation to make you believe you are going crazy.

To be fair, when they reset usage for everyone (instead of a banked reset), they move your reset back a week later, so:

1. Your window ends (usage reset) in 3 days

2. They reset usage for everyone

3. Your usage goes back to 100% and your current window ends in 7 days now.