Why did you transfer the money when the invoice says it will be paid by direct debit? You will now have credit in your customer account. As it takes o2 2-3 weeks to process a transfer back to your account, it would probably be easiest to just leave the amount there and use it to pay the next invoice.

actually they can do that？ because I find out its different bank account

i pay to xxxxxxxxxxx131 53

and they direct debit to xxxxxxxxxxxxx636 01,

both accounts belong to O2, it's okay if next month will not  debit any amount from my account.

can someone enlight me out?

It should get used for the next bill, you can wait for confirmation with a moderator.

Okey, thanks bro.i will wait for confirmation

Hi @steven bian, 

welcome to our English community.   

In order to check if the payments came in correctly, I have just written a private message via @o2_Support

Please reply there to my private message. 

Afterwards, we will check your payments. 

Loving greetings,

Tobias

Hi @steven bian, 

I have just replied again at @o2_Support. 

Loving greetings,

Tobias

Hi @steven bian, 

i have just replied to your private message at @o2_Support. 

Loving greetings,.

Tobias

Hi @steven bian, 

I just gave you another reply at @o2_Support. 

Loving greetings,

Tobias