If a deaf person doesn't know sign language what can you do to help and or communicate with them without screaming or yelling at them?

Answer 1

First of all, a deaf person cannot hear, so screaming, yelling, or modifying your voice in any way serves no purpose.

The best thing to do when trying to help a non-signing deaf person is to find out how they communicate. It may be one of the following ways:

1. writing
   
2. lipreading
   
3. gesturing
   
4. home-signs (a sign language that naturally develops in a household when no formal sign language is known).
   

If the situation warrants it, you can also try to teach them sign language.

Answer 2

They can read. Write to them. They are deaf and not blind.