Monthly internet useage exceeded a bit...

I think I may have overstepped my Internet usage by a small amount.....
I had this e-mail from my provider (BT) today...
[quote]Usage Allowance
Dear Customer,
This email is to advise you that last month you exceeded the usage allowance for your BT Total Broadband Option 1 service.
Your current monthly usage allowance is 5 GB.
Your total usage for last month was 43.79 GB.
Don't worry, we're not going to take any action this month. However if you exceed the allowance next month we will raise a charge based on
I had this e-mail from my provider (BT) today...
[quote]Usage Allowance
Dear Customer,
This email is to advise you that last month you exceeded the usage allowance for your BT Total Broadband Option 1 service.
Your current monthly usage allowance is 5 GB.
Your total usage for last month was 43.79 GB.
Don't worry, we're not going to take any action this month. However if you exceed the allowance next month we will raise a charge based on