Rob Kardashian's ongoing legal battle with his ex-fiancee Blac Chyna recently got uglier.

At Chyna's request, Rob's mother and three sisters received subpoenas.

Kris Jenner and her daughters Kim Khloe and Kylie were trying to avoid this request.

Their legal representatives filed for the deposition of these subpoenas.

The lawyers claimed that Chyna's request was a publicity stunt and a form of harassment.

In response, Chyna's lawyer stated that the Kardashian-Jenner family wasn't above the law.

The ongoing legal battle between Rob and Chyna began in 2017.

The "Rob & Chyna" accused his former fiancée of domestic violence.

Chyna also accused Rob of committing Revenge Porn and "verbal abuse."