Sorry about your interview experience. I hope you receive your card soon, hang in there.
I just got a message on cell from USCIS so I went online to check and this was the message.
On January 26, 2010, we mailed you a notice that we had registered this customer's new permanent resident status. Please follow any instructions on the notice. Your new permanent resident card should be mailed within 60 days following this registration or after you complete any ADIT processing referred to in the welcome notice, whichever is later. If you move before receiving your card, please call our customer service center at 1-800-375-5283.
During this step the formal decision (approved/denied) is written and the decision notice is mailed and/or emailed to the applicant/petitioner. You can use our current processing time to gauge when you can expect to receive a final decision.