Just to confirm in public forum, Virgin have been unable to fix my problem after 7 days. This started out as a repeat of a problem I had in February whilst traveling abroad - I am unable to hear the voice of a caller to my phone nor can the caller hear me. This was fixed in February via a transfer if my problem to the second line network team. Over 5 long calls with the virgin helpline, repeating many diagnostic tests, Virgin have actually made the situation worse by deactivating my current Sim so I have no service at all. During those calls, the tactic seemed to be to step through the tests and when exhausted, request some time to investigate and promise to ring back later. This never happened. Further despite my continual reference back to the Feb incident, at no time was the 2nd line network team engaged. Overall virgin service has been pathetic and chaotic. Topping it all, escalating via the complaints process has been met by blockers as I try to push for ownership higher up in Virgin.....