ANSWER:

Are you still suckling or not?

You are either lying or you have a mental illness that requires seeing a psychiatrist. 

It is prohibited to obey your mother in such sins even if this leads her to cut you off and not talk to you! 

My question is: after keep resisting I don’t have the possibility of blocking my mum from shaving my beard (I don’t shave it myself she does it) also she wants me to walk around with my Awrah opened. She even buys me Shorts which don’t cover my knees. Am I sinful for this if I stop resisting? She threatened me to sever the kinship with me if I do not do what she says.