What is the name of a song from 1998-2000 girl band- something about woman who caught her man cheating and now out spending all his money- kind retro vibe- not TLC- spice girls- help?

The song you are looking for is "Bills, Bills, Bills" by Destiny's Child. It was released in 1999 and became a massive hit, reaching number one on the Billboard Hot 100 chart in the United States. The song is about a woman who discovers that her man has been cheating on her, and as a result, she goes on a spending spree to get back at him.