Result
Called them again to enable the conference call feature and got through to a Scottish bloke. He was going on about the "group call" feature as well.... then a story that it's only available on iphone tariffs. When he said that, I don't know I just kinda lost my temper
and gave him a bit of peace of mind. I said I'm not putting the phone until its sorted or I'm cancelling my contract as I'm still within the 14 days peace of mind guarantee.
He put me on hold for 2 minutes and came back with a good news. Bless him
.
Thanks TRuE_SpiRiT and the rest