£0 spend cap - how to send to a number I've 'never allow'

[Rozzi]

I have a £0 spend cap on my account. I was replying to a O2 customer services feedback text when the options of 'never allow' and 'always allow' came up to authorise the text to be sent. I clicked on 'never allow' and a brief message came up saying how to change this option. The text wasn't sent. I want to change the option so I can give glorious feedback for Nicole who helped me on Sunday with my new sim...

I can't find on my Samsung S20 FE where to change this in Settings, nor can I find a way to 'unblock' a number on the O2 app or website to permit it to be sent outside my spending cap settings. 

I know you will have the answer. Thank you.

[MI5]

@Rozzi 

The text is free to send so it's not being blocked by a spend cap.

You can check the blocked number list in your message app or go into app preferences in settings and reset the message app to default.

[gmarkj]

You can also give feedback on here @Rozzi. 
Was it from a store or through phoning customer services?

Can you help @LukasB @TheresaV ?

[TheresaV]

Thanks for the tag @gmarkj 

I will message you privately to get some more details to pass this on @Rozzi 😊