O2

I was just wondering if anyone would be able to give me some advance and support, I’m looking to change my tariff and on the bottom it says “if you confirm, your next tariff will start on ........ and will cost £24.64 a month. You will continue to pa...

I have just received my first month phone bill and it is a lot higher than expected is it normal for the first month to be more expensive and then will it go back to the original device plan and airtime?