Verbal Abuse, Emotional Blackmail By Parents

Hi My name is Praveen , 31 years old male, My parents are very conservative. my mother does lot of negative thinking and abuses me. I got married 2.5 years back , just after 10 days of marriage my mother started abusing my wife also for smaller things. She(mother) always starts verbal fighting every time we go to our house. (for example : We usually go to our hometown for every festival , but we couldn't go once due to some health issues , we communicated clearly about this to my parents and my brother as well beforehand, still they abused us over phone for next 1,2 months continuously for not coming home). Same thing is happening for 3,4 years almost . So to avoid all these I distanced them from 2 months. and now they started doing emotional blackmail by writing my name and my wife's name on suicide note and threatening us. Kindly advise us what to do?