I find loads of WGs either don't read their AW e-mails, or they read them and don't bother to answer them. There could be all manner of reasons why that is.
But I am coming to the realisation that it's probably better to phone or text them in the first instance, if their number is displayed. If you get fucked about, given the run around, spoken to in disrespectful way? Then hang up and move on to another one, there's plenty to choose from.
But it's always better to check on this forum first to see if the WG has had any Reviews, which will give you a better chance of finding a good punt.