My friends parents are so fricking rude !??!?!?!?

so my friends parents claim that nobody is alowed down when they have a baby sitter but i see kids coming in and out of the house all day but when i come down to play when everybody is gone i get the same excuse so i try to go down when there are people there then he tells me um ya my parentsdont really like you and you not allowed to play with us. and i dont know what i ever did to deserve this all his friends that come down say cuss words look at innopropriate stuff on youtube and when i used to come down alls we did was sit on the porch and listen to GOOD music so i dont know how to confront this i feel really left out and unliked :(