I went once for a mountain bike that was locked in the shop when it went out of business. The building owner wouldn't let the shop owner into the place of business. I filed a claim against both of them, presented evidence of ownership and that it was locked in the shop. Building owner was ordered to open the shop and return my bike, as she had no grounds to prevent me from having it.
Second one was when my brother sued me for 10K over a real estate deal gone bad. He hired an attorney to represent him, as he lives out of state. I pulled together all pertinent paperwork and payment information and presented my argument, the crux of which was that we did not have a rental agreement, we had a purchase agreement, and he changed the terms, therefore the deal was null and void. His atty. almost lost him his house, as I actually had grounds to have all that I had paid into it returned.
What seems to have worked best for me was to present a clear timeline of events with evidence (paperwork, pictures, etc.), and stick directly to the facts. If you don't have those, you don't have a claim. Since it is you who is suing, you need to prove your claim.
I dunno about the triple damages thing though. It might be hard to prove that beyond being made whole, you deserve more. You will probably have to prove that there was some intentional malfeasance in their part to get that, but it can't hurt to ask.