Annoying people who cannot stay out of my business?

I cannot stand people who are so nosey who are all up in my business like they know everything yet have not had higher tertiary education. How do you deal with people who bother you? when they stand outside your house or on the other side and talk about you when they do not know a single thing or make stupid assumptions not realising that no better. There is something seriously wrong with them not knowing that they are mentally challenged people and if they were living in a different suburb the neighbours they would have would actually call the police on how noisy they have a problem with me playing my gospel music or singing what is wrong with them bogans seriously they drink up and smoke wondering why they have kidney problems stupid its because of the alcohol. I have just gone a bit too far tell me what you think?