Cannot call landlines from iPhone 7

[SupersonicCow]

I have an iPhone 7.  When I try to call a landline (I've tried a handful of numbers), I can hear nothing (either ringing or after someone answers and speaks).  mobiles seem ok.  Using Airpod Pro's makes no difference.

I've just upgraded to IOs 15.5 to see if that kicked it in to life but it hasn't.

The fact that it seems to work to mobiles implies it's not a hardware issue I think?  Any suggestions?

[MI5 · Accepted solution]

@SupersonicCow 

Sounds like an account issue.

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. 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

[SupersonicCow]

Thanks chum, I'll give them a call

[MI5]

Good luck