"There ain't no"... is slang, it is a very informal phrase

Hi Mikhail, some of the answers here are incorrect. 'There ain't no' is not incorrect English nor is it slang. It is correct in a number of dialects of English, but not in standard English. 'There isn't any' is standard English.

There ain't no Us a double negative. It is used in common speaking, but grammatically actually wrong. There ain't no = there are not no ...