HELP My parrot has a squaking problem. He is constantly yelling, how can I make him stop?

I have a sunset conure that I adopted from a abusive family. I love the parrot but he keeps yelling. No one can talk on the phone or even speak without him trying to over power their voice. My family is sick of the noise and I dont know how to make him stop. He also is a biter. He doesn't like hands and will bite you. He has fresh food everyday, clean water, and a clean cage. I also take him out of the cage (with leather gloves of course) so that way he isnt always in his cage. I dont want to have to find him a new home because hes been moved around alot. He is 11 years old. thank you