Losing interest in life. What to do.

I have no family (except mother), no siblings, no friends. My work life is a mess and have multiple health issues (including 2 surgeries). I have tried meditation, yoga, counselling therapy 30+ sessions and have had medicines by 3 different psychiatrists at different times. I feel lonely 24/7 and everyday is a struggle to live. I got a pay cut at work and relations with my mother are terrible. My father passed away in late 90s. Everytime i try to call someone to talk they disconnect (including helplines). My depression treatment has costed me over a lakh with no results. I was inappropriately touched by a stranger recently. My mother tried to leave the house if I tried to marry someone I liked. I don't have any interest in life whatsoever and always feel like sleeping and not waking up. I don't know what to do.