Automatically exchange cryptocurrency and send to bank account

[adamcro]

Greeting

I would like to start a web service, so I am interested in the following is possible

1. The basic thing I need is to be able to receive cryptocurrencies. So the buyer pay in my place what he wants to buy cryptocurrency
2. It is important to me that I have some kind of webhook or callback so that I know the status of the transaction
3. At some point when I reach a certain limit to request an automatic cryptocurrency exchange for fiat and a payment to a bank account.

Number 3 is especially important. Is there anything out there that can do that?