So was not bug, wrong wallet or something. 100% I sent to them and they wait some time and then move the money)
If you've sent funds to the wrong address, whoever ownes it can have moved your funds.
I'll repeat this question:
why didn't you check the Letter of Guarantee before depositing a small fortune?
Now you're making a scam accusation without a shred of evidence, while you could have had ironclad evidence (if this really happened).