It never stops. This number called, after 8pm, and they just hung up, as usual, when the answering machine came on. I can't block the number of every single scammer or I'd have two thousand blocked numbers and my phone (made by people who don't live in my world, obviously) only stores 30.
Please never - not ever - answer calls from unknown numbers, or call them back, otherwise this torment is going to continue for eternity.