Life's a bitch

I talked to my ISP today and they claim that I exceeded my limit by 5 gb = 500€/700$. Which is a sick rate, but I was aware of that.
Tbh I think it's really difficult for me to have achieved 20gb of data transfer, but I have to admit that I can't completely exclude the possibility that it was my fault. There reasoning behind why they didn't warn me earlier was that I was able to check it online (which I hadn't yet used, because I haven't signed up for the service yet). I've decided to just pay the bill for the meanwhile so that I have internet again and then take a closer look at the bill and possibly contest it if I think it's unrealistic.
This is a pretty tough beat for me cause I have to take that extra money out of my br and I was just about to move up to 2/4 and this will delay me even further.
For the meanwhile untill my internet is unlocked again I bought a friend of mine a router so I can log into his internet. I'll be grinding a bit at his place till my inet is up again.
All in all it's a pretty tough spot, but nothing I can really do right now but wait and pay the bill.