My first bill is wrong

[#1]

I recieved my first bill for broadband and phone today. The broad band has been charged at £9.99 not the £4.99 as the discount has not been applied WHY NOT!!!! signed up for 12 month discount (refer to ticket by chrispurvey 10/03/13)

[#2]

Hi there,
Sorry your discount wasn't applied. I've refunded the difference to your account which will take upto 10 days to process.
All future discounts WILL definitely be applied to your bill.
Chris

[#3]

Many Thanks yet again Chris for your prompt  action
Kev R.