Not letting me top up

[Kellygourlay11]

Hi I've gone and brought a evoucher to top up but haven't been able to top up for the half hour. This is really frustrating. 

[pgn]

Are you unable to call 4444 to give the voucher number, @Kellygourlay11?

The recommended ways to use a voucher are to call 4444 free from your mobile, or 08456 062 277 from a landline, enter the number on your receipt and follow the instructions. Top up between £10 and £50. Your voucher will expire after twelve months.

Other ways here: Guide How to Top Up (PAYG) 

Or is something else preventing you from keying in the voucher number?

[MI5]

@Kellygourlay11 

Seems to be a current issue. 

If you message O2 on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG) , they should be able to help you with this.
Thanks.