Voicemail says it's full when it is in fact empty

[Chasmore]

I allowed my voicemail to become full.  I then emptied it.  Having done so callers were still being told it was full and messages could not be left.  I was told by O2 that it was a device issue.  I had a Google Pixel at that point.  I upgraded my phone to an Oppo Find X5 hoping it would be fixed.  It hasn't been.

I have spent hours with O2 since trying to get it fixed but to no avail

Has anyone else had this issue and found a fix?

Anyone got any ideas other than 1760/1750/##002#

[O2Lisa]

Morning all, thanks for the tag @gmarkj 

@Chasmore I’ll message you privately and look in to this for you. 

[Chasmore]

Manythanks gmarkJ.  Lisa is in touch.

[Chasmore]

thanks all for your help.  Happy to report that with @O2Lisa's help, the issue has been resolved.

[O2Lisa]

Glad it’s all working for you @Chasmore ☺️