You sy they you handed the parts and the car to them all together, Here is a tale you can relate to then.
About 3 years ago my brother near new WRX was in a workshop in sydney. It already had apexi front mount, apexi turbo, power fc, coilovers the list goes on. He then went and bought a new trust t67 kit, injectors, twin plate clutch, trust intercooler, about another 14k. All this new gear was sitting in the boot, he handed his car to the workshop and surprise surprise it went missing that night. He found out over 36 hours later and not even from the shop it was the police who called him.
My brothers insurance checked the premises themselves and paid for the car but not the parts - fair enough. We later found out that the keys to my brothers car were not locked up as the shop could not provide the keys.
Cut a long story short it went to court, the shop owner never fronted so they ruled in my brothers favour but no one knows were this guy is so no recourse can be taken.
Lesson to learn people - if your doing a buil up only give the shop the parts as required!
Hope you have better luck being reimbursed by Pulse performance as they have a duty of care to their client (you) when they accept your vehicle as a job / car to work on. They make their money buy working on cars therefore it is up to them to make sure these cars / parts are safe whilst in their care.