Turn away = “*to cause someone or an animal to avoid moving toward something”…They turn us away at the border because we don’t have visas.
Turn down = “ *to issue a refusal to someone *refuse a offer *to decrease the volume of something”… We had to turn john down, even though his proposal was okey. Plase turn the radio down. The board turned our request down.
Turn in = “ *to submit or refer someone or something to someone, *to go to bed”… I turned in report to the treasurer. I want to turn i