Verbally abuse by neighborhood

Sir the place where I live is a chawl the neighbors that live in front of my house in there is a woman above 30 yes old she is unmarried but for the past few years she has been verbally abusing us whenever we are in our gallery she says something very foul to us we have ignored it alot of times. We haven't done anything wrong to their family. No other family members does this to us but she is the only one. we are walking out of our house she will say "chi chi". This is nothing sir she has done more than this . Me and my brother has been raised by my single mother my dad is dead after his death we have been facing alot of troubles it gets very much difficult to live here. She never says anything to us with our name all she says is without taking our name so we can't even question her whom she is talking . It's now high time we have been quiet for almost 3 yrs but she is still the same as a student and my single mother it's getting difficult for us should we file a complaint against her or what else should I do.?