Bronco missing sprue

[Step]

Morning all, been hunting and emailing to no avail on this one an wondering if anyone has any ideas. 

I have a a bronco versuchsflakwagen 8.8cm flak 41 auf sonderfahrgestell (Pz.Sfl.IVc) kit which I have found is missing an entire sprue. I emailed both Bronco and Hannetts as they are listed as the UK distributor but over a weeks gone by without a response. As it stands the kit is unbuildable an I'd rather not have to either buy an entire new kit or get rid of this one. 

[Sairou]

I seem to recall that consumer law dictates that it would be the responsibility of the shop you bought it from to solve this problem for you.

[Step]

Only works when you can remember where you got it though, I have had the kit a little while now

[Mick4350]

Do what I do. Keep your receipts for the kits you purchase ( in the box ) in case of future problems that may arise in the future !

[Step]

Yeah I usually do, I'm guessing I got this at a show, rather miffed no reply from either, though the Bronco site isn't exactly confidence inspiring. I'd have thought Hannetts would have replied even to simply say no