Called to advise there are issues travelling down Sandringham Road in Auckland, where coverage means whilst on a call it will either drop, or they can't hear me and vice versa. 

I was told to switch my phone to 3G to resolve that. When I asked if they thought I should do this full time or just in the affected area they said either solution would work. 

Not the response I was expecting to be honestly. It's hardly practical in either case. I travel this route twice a day!