How do I contact the billing department?

[SkyePye]

I need to speak to someone about a refund due to me, I have received an email requesting my bank details, but am reluctant to provide this and haven't got an contact for this, and the email address it came from is a no reply address

[Cleoriff]

@SkyePye 

You need to contact Payment Management

You can reach the Payment Management team on 0800 902 0217 or 0800 032 5302

The opening times are:

Monday to Friday – 8am to 8pm

Saturday – 8am to 6pm

Sunday – 9am to 6pm

https://www.o2.co.uk/help/account-and-billing/payment-support

Best time to call is around 8.00am