Hi ​@Timowned12 

Please follow the below steps to change your bill cycle date.

1. Go to https://my.idmobile.co.uk/login and then login
2. Click bills
3. Click Manage your payments
4. Click change your payment date
5. Change the date to the desired date, read the T&C's and then click submit. 

T’s & C's:
Due to the Direct Debit process, payment may come out of your bank account up to 3 working days after your nominated date.
Your Direct Debit payment date will change from your next billing period. So if you've got a Direct Debit payment pending, it'll come out on the original due date.
Your billing period will change to align with your new payment date.
Your allowances will refresh on your new billing date.
Your next billing month will be longer than usual. To ensure you've got enough allowances, they'll be pro-rated during this period (along with your line rental). This means your next bill will be higher than usual. For more information, visit Changing your Direct Debit payment date.

Regards,

Gemma