Double negatives affirming one another instead of negating is a common thing in language, known as “emphatic negation” or “negative concord”. Middle English used emphatic negation and various English dialects still use it to this day including African-American English. They’re saying exactly what they mean, just not in Standard English. Just like they’re probably not pronouncing the words the same way. No reason to get annoyed.
Double negatives affirming one another instead of negating is a common thing in language, known as “emphatic negation” or “negative concord”. Middle English used emphatic negation and various English dialects still use it to this day including African-American English. They’re saying exactly what they mean, just not in Standard English. Just like they’re probably not pronouncing the words the same way. No reason to get annoyed.