Okay, thanks.
I think it was probably one of the options I unclicked when buying the priority service as I didn't realise that was the return labels. It really didn't make it very clear. Plus the instructions on the info sheet list these as separate steps. They really need to make things clearer.
Anyway, we probably need to try and calm down, go to bed and deal with this all in the morning with clear heads.
We'll head to the local UPS first thing and fingers crossed everything will finally be done.
Thanks again larrabee for all your feedback and help.