Cat grooming suggestions

Hello everyone! I am looking for a place to groom my long haired Siamese mix… Long story short, he is an asshole. He hates being brushed. I know there are a few places that can sedate him and groom him but I am unable to find via google. I’ve taken him to PetSmart and PetCo a few times but they all call me back saying he is too aggressive to continue grooming.

I really would like for him to get a little trim… nothing too crazy. Any suggestions would be appreciated.