What specialist are you talking about? Did you even bother reading the replies above?
The so-called bitcoins do not exit

Here, check a couple of addresses for yourself
1. https://blockchair.com/bitcoin/address/1JxUgKTHoYiEuRuMs14rFY1TT9AwMiwc13
2. https://blockchair.com/bitcoin/address/1PugDBFny6gdkkh2L8z7baSd3VmuMEnHB
3. https://blockchair.com/bitcoin/address/1Lz2JytbJkqxFdNxuXRWbL94aGWGX5QJXh

The addresses have zero transaction histories and Zero BTC. The Transaction ID's Posted also don't exist on the Bitcoin blockchain. Now tell me, what specialist can recover Bitcoins that are not there?