Kim Kardashian Hangs Up Phone Conversation With Blac Chyna

In the Sunday episode of Keeping Up With the Kardashians, Rob Kardashian surprised Kim by putting his fiancée Blac Chyna on the phone with her.
Rob and Kim were having a conversation when Rob told Kim that Blac Chyna was in the room. Kim then heard Blac Chyna say "hi" in the background but Kim "didn't say anything" because she "froze."

When Rob handed the phone over to Blac Chyna, Kim hung up because she wasn't "ready" to talk to her.
"I'll talk to her when I'm ready," Kim explained.

But then the relationship between the Kim, Rob and Blac Chyna experienced a "big setback" when Kim learned on the episode that Rob and Blac Chyna had been "bashing" Kylie Jenner and Kris Jenner.