A source speaking to The Mirror says the couple feel embarrassed by their daughters actions after she had an affair with married director, Rupert Sanders.
The source says: "They feel Kristen has really embarrassed herself and don't blame Rob for not calling her back. This is not the Kristen they know."
Robert has reportedly cut off all phone calls, text messages and communication with his girlfriend despite her allegedly bombarding him with calls.
However, with the new Twilight film coming out in the autumn Rob will have to speak with Kristen eventually.
Or at least, share a red carpet. Wow, those would be some awkward pap shots!
It's believed that the film's producers are worried to death that Rob won't go through with his commitments and the premiere and promo trail could be cancelled.
'The Twilight Saga: Breaking Dawn Part 2' is due out on November 16 however, the couple do have prior commitments to that.
The pair are also supposed to be presenting at next month's MTV's Video Music Awards however, we just can't see how that one will happen.
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It's believed that Rob is currently trying to recoup at Reese Witherspoon's ranch in California while Kristen is thought to be seeking a meeting with Liberty Ross, the wife of Rupert Sanders.
Phew! We kind of miss the days when they just did a bit of acting and looked nice on the red carpet.