I wouldn't be too patient; call them and ask them what's going on. If their answer is not to your satisfaction then apply through Parc. Contract agencies are there to serve you, as well as their client (AJX), so make them work as they'll be earning plenty from your placement.
It may very well be that they're missing some info from you, or that they're processing you in a particular order. Nevertheless, they should let you know this if you call them, rather than just keeping you in the dark, which is just plain rude.
You're not beholden to anyone yet, so if you're not getting the service you want, go elsewhere.
Crew definitely have the best health insurance, for the whole family, and well worth it if you're a Yank. They are introducing loss of licence insurance but you have to pay for that separately. Parc has good, free, loss of licence insurance but the health cover, while good, is only for the pilot and includes a £200 excess. Insuring the family is quite expensive through Parc. If you're single, then Parc would probably work out better but beware of what the future holds for single blokes
