Why is my husband doing this to me please help please read?

My husbands grandmother came here to see us from GA. We live in Texas. She came here to visit she is very perky lady. anyways, I wait on her I try to show her my respect as she is my guest. Anyways, as I was giving her some drink she was on the phone and she said hold on a minute, (The maid) is giving me my drink. I allowed her to say this to me then she said it 2 more times the next day. I was so mad. This is my husbands grandma. He didn't even say anything to her. Do you think my husband respects me? If he did respect me why didn't he say anything to his grandmother . Also, we went to Virginia for Thanksgiving and his aunt treated me like trash. She was very rude to me and snippy and he didn't offend me i made her a pie and she freaked out saying she already has pie. Anyways, she was rude he never says anything about it. He let's them talk down to me why