O2

hi i am looking for some help as I have so far got no where with anyone else from O2 regarding this. I upgraded my phone on the **Personal info** and from that day my voicemail began to tell me the mailbox was full. I checked my messages and I did ha...

I am trying to access my extras to cancel it and for the last week I'm greeted with an error telling me something went wrong. I cannot even check how long I have left through the calm app as it tells me I need to manage through O2. Can someone help w...