How can I change payment date

[Crookse]

Hello how can I change my payment details 

[jonsie]

This looks like something you’d need to call O2’s customer service team about – give them a call on 202  or 0344 809 0202

Use the specific Payment management number  0800 902 0217

The opening times are:
Monday to Friday – 8am to 8pm
Saturday – 8am to 6pm
Sunday – 9am to 6pm