Upgrade, direct debit,

[calviin]

Hello

Just after some advice

I am on a SIM ONLY. I can upgrade to a refresh phone contract after 3 months which i can on 19/03/2018

My 3rd payment is due out of my bank account on 13/03/2018

However...

I had to change banks and i updated my direct debit details with O2 on 5/3/18. I don't think my direct debit payment will come out in time? I understand the upgrade is only accepted if i have made 3 payments on time.

What can i do?

Of course I can pay with my debit card but surely any payment i make now will not be taken off my bill until my next bill is generated?

[calviin]

Because ive just paid my bill and its on a pro rata basis. What happens to the rest of the month i paid in advance for? Will i be billed again as soon as i collect the device? Thanks

[MI5]

It gets added to next bill.
Your billing date doesn’t change.