I am ownership bussiness to selling for public, I am a tough man!, strong stand up and face to face with anyone on the island and other big cities! I was on the tv news! I was sort of a star! I don't see anyone deaf people who are saleperson or ownership busisness that how to communcate with hearing people and deaf.
However, when the hearing people came to my shop, they were very interested in to buying something or asked me some questions ETC
depend on who are they can speak faster or slow or whatever.
for me, Its very important to me I want to understand everyone can conversation with me.
It s famous words they always said that " I am very impressive with you" How can you do that? I can't believe those are very quite expensive. I told them thank you thank you, They love me that how they respect me a lot
The uneducated hearing people do not know how to communcate with me people, they are not smart enough. If they do not respect me then I can kick them out of my shop 
I know its very hard and frusrated but its good challenge , great experince in my life. I do still love my bussiness, its always lot of fun 
If hearing people do not know how to deal with deaf people , or fun with them, they are uneducated, God would not happy with them.
Remember that God loves people no what matter who are they, God wants to see peopel have good cooperation, good respectful, etc.