I helped my neighbour sign up to Vodafone a few months ago.
There were issues, mainly with their phone support, their sales team charged us 9.95 for router delivery without warning, and their support phone number uses a "tell me why you're calling today" type of robot (hate them). Also their support number seems to have issues with sound - there were several times when either a robot or a living person on the other end couldn't hear me.
On a good side, with Vodafone you can book a call back which PN don't offer, so you're not sat for 40 minutes listening to their music; and music on Vodafone's support line is better than that of PN too.
Best of all: Vodafone's broadband itself has been flawless up until now.
Edited by Mml (Wed 22-Nov-17 18:01:03)