O2 Contract Charges

I received my iPhone yesterday so my contract started yesterday (online order) but due to them sending the phone out the day before they set the phone up on the network a day earlier and decided they would charge me a days usage extra for this day, the amount was very small (£1.16) but it was more the point that they even dared to charge me for this that I raised it with them. I received an email this morning stating that they will refund me that money as I didn't actually receive the phone till the day after calling it a 'goodwill credit'. Just thought I would post this here incase they tried this with anyone else, some easy profit for them if they did it to every online order.

Here are the important parts of the reply:

"Your iPhone 3G was dispatched from our warehouse on 16 July 2008 and on this date your account was activated on our network. The line rental is charged from the date your account is activated on our network. This is the reason you were charged £1.16 including VAT (Value Added Tax) for 16 July 2008, as one day line rental on a pro rata basis.

...

As you received your iPhone 3G on 17 July 2008, I've now applied a goodwill credit of £1.16 to your account for the one-day line rental. This credit will appear as an adjustment on your next online bill. Currently, you can view this credit in the 'Other charges & credits' section under the 'Recent charges' tab of your online bill"

 

I did have to 'complain' about it and isn't the £1.16 for the £35 a month contract obviously slightly more or less if you have a different one? (1.16*30=34.8)