Lisa Vanderpump isn't always thrilled with her staff at SUR, and Monday's episode of Vanderpump Rules was a testament to why.

The 'Vanderpump Rules' Cast Wants A Raise, Better Plane Seats [Report]

During the latest episode of the show, cast members Tom Sandoval and Kristen Doute, who dated during the series' first two seasons, engaged in a bitter dispute in Vanderpump's West Hollywood, Calif. restaurant.

"Tom and Kristen are like Tom and Jerry. One's got a frying pan, one's got a spatula. The chase never ends," Vanderpump wrote in her Bravo blog on Monday.

'Vanderpump Rules' Star Katie Maloney Reacts To Her Boyfriend's Infidelities

Following their messy season two split, which occurred after it was revealed Doute had slept with one of Sandoval's best friends, Jax Taylor, the former couple remained at odds. Although they have both moved on with different relationships, they often bicker, and when they do, it doesn't take long before things get heated, as they did on Monday night.

"When I see this, it really p---es me off," Vanderpump said of the combative pair. "Employees should never act like this at work. One of the things that really infuriates me is seeing the bad behavior when I'm not around. At least they had the good sense to do this while the restaurant wasn't open."

Sandoval and Doute aren't the only couple who've dealt with a cheating scandal on the show. Doute's former best friend, Katie Maloney, recently discovered her longtime boyfriend, Tom Schwartz, cheated on her.

In the video below, Maloney can be seen discussing her boyfriend's infidelity.

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Vanderpump rules, Lisa vanderpump