What happened to your Bitcoins that you need a recovery firm? Did you lose your your recovery phrase/private key/passphrase or something similar that unlocks your coins? Or was the Bitcoin stolen from a fake wallet, exchange, or some other hot wallet. It it's the latter, there is almost no chance that you will get your money back if the thief knows what he is doing. But even if he doesn't, you would have to include law enforcement to get anywhere. If you lost  your entire seed, there is nothing you can do. If you lost just a few words or a few characters from a private key, there are various types of software that can help with recovery.

My suggestion is that you explain exactly what happened. That would help to suggest what you can do next.