Usage Cap?

[#1]

I have plusnet value with 60GB usage, and was told I would be charged if I go over this amount.
I was wondering, is there a way I could cap it so that if I reach 60GB, my internet cuts off, or something similar?
Thanks

[#2]

https://portal.plus.net/data_transfer_watch/
Set the extra spend to zero.

[#3]

you cant be  Value is only 10G  Extra is 60G  pro is 20G
what does this page say you are on?  https://portal.plus.net/view_my_broadband_usage/index.php
the package is on the light pink line and you monthly allowance on the   Paid-for allowance: Up-to 10GB 8am - Midnight

[#4]

Hi CuBz,
Just for the clarification of other readers it's the Extra account type that you have with the 60gb peak time bandwidth allocation.
Yes, there is a data transfer cap that we can set for you, this basically slows the speed of the connection down to 128kbps when the 60gb limit is hit. Don't for get your usage is free during the off-peak hours of midnight and 8AM.

[#5]

Ye sorry I meant extra 
Anyway, thanks that's great