It was a shouting match serious enough for a clerk at a Detroit cell phone store to start filming the exchange.

The heated argument was regarding a woman’s son, who bought a cell phone more than two weeks ago and wanted a refund. The clerk who shot the footage says after trying to explain to the irate mother her son’s date of purchase exceeded the store’s 7-day policy for refunds, the mother wasn’t taking no for an answer. Roll the video.