Bancar is a cool slang verb, especially common in Argentina, that means "to put up with" or "to tolerate". It's not something you'll find in a textbook!
In the song, Nicki Nicole sassily sings, "Búscate otra que se banque... todos tus reclamos" (Find another girl who'll put up with all your complaints). She's using this word to draw a line and stand up for herself, making it a powerful and memorable part of the lyrics.
Mexican cumbia legends Los Ángeles Azules team up with Argentine singer Nicki Nicole for a danceable track about the mess of missing an ex. The core of the song repeats the exact same struggle: Y es otra noche llorándote ("And it's another night crying for you") because of las cosas que no dije ("the things I didn't say"). Time has run out, and the pain of not being able to hold them is heavy. Yet, right alongside that heartbreak, the song flips into pure attitude.
Nicki throws down some great South American slang when she tells him, Búscate otra que se banque, papi, todos tus reclamos ("Find another girl who puts up with all your complaining, daddy"). In Argentina and Uruguay, bancarse means to tolerate, endure, or put up with something annoying. She calls him out for making her feel crazy (Tú me tienes psycho ["You have me acting psycho"]) and looks up and down trying to find a way out of her feelings. It is that classic cumbia contrast: you are confessing that it hurts deep in your chest (me duele en el pecho ["it hurts in my chest"]), but the rhythm keeps you moving anyway.