voicemail number deleted

[Jackie44]

I managed to delete my voice mail number and now when I want to listen to my voicemail messages it says that there is no voicemail number and asks me to add the number, but I do not know what it is. My phone is a galaxy ace and I am on a uk pay as you go orange sim card. Thank you

 

[Titillating]

Have you tried just calling yourself (i.e. dialing your own phone number)? Not sure if that will work for a U.K. phone, but that usually leads you to your voice mail over here in the U.S.