'Bev Hills Housewives' Doctor: My Nose Job Patient is Threatening Me!

Snot your typical restraining order ... "Real Housewives of Beverly Hills" star Dr. Paul Nassif claims a dissatisfied nose job patient has been harassing and threatening him to the point the cops are now involved and Nassif is asking for court protection.

Nassif -- a cosmetic surgeon who is married to "Housewives" star Adrienne Maloof -- performed all sorts of schnoz work on Roman Melikov. Mr. Melikov didn't like the results, to say the least.

According to the police report, Nassif claims Melikov incessantly called his office, demanding to speak with him and threatening, "If I don't get to f**king talk to Dr. Nassif, I will just show up and f**king wait for him to talk to me because he needs to f**king pay for this!"

And Melikov left voicemails for Nassif, referring to himself as a "psycho." Melikov also said he would come to Bev Hills to "have Nassif's wife help him out of pity."

Nassif's employees fear Melikov is mentally unstable and could come to the office "and do something crazy."

Nassif wants a restraining order, keeping Melikov away from him and his family. As for Melikov, he wants a $26,000 refund.

We spoke with Melikov, who told us Nassif screwed up his nose. The swelling didn't go down for 2 years. And the 25-year-old businessman tells us his nose is now bigger and ugly.