I'm having problem with a bug that also happened to me last week. I'll get a request for a dish and then whether I start cooking it or not I'll get a repeat request a matter of minutes later for the same thing from the same person! I've tried un-selecting them from my friends list, but the requests still come through. Not only is it clogging up my Pending list, it's holding up my game because every time I get an order request popup notice it stops game play so the things I am cooking take forever to cook and the zombies I'm trying to recharge are taking forever to recharge unless I'm right there to click "OK".
Has this happened to anyone else?