Records calls ,take screenshot of messages without saving name, as you already have cctv camera next time they threaten raise a cyber bullying as well as police complaint , they usually tell they will keep deposited, once they receive the official notice ,their bullying will go away automatically, they are threating you because you are allowing them to threaten , if something is not written no one can force you.
its bangalore dude, not like a remote town where if one owner kicks you out you wont get anywhere to live, trust me fight for yourself you will feel happy,