How could you say the word "trustworthy" if you're not saying the truth?. Primedice didn't stole your bitcoins, you're the one who bet and lose it all. It would be acceptable, if your bitcoin have been directly transferred from your wallet to primedice wallet , then you can say freely that they stole your bitcoin.

You can check the seeds, it will help you.Good luck! Hope that you can recover your losses.