I electronically filed my amended return and it says it takes 21 days to be accepted, well all I got from the irs is a phone number [phone number removed] ext 653. I didn't see that number on anyone else's questions and thought there was a problem. So, I called and got a nice man after 5 minutes, who told me that extension was for amended returns so I asked him why it hadn't been accepted he said it takes up to 16 weeks and it might take even longer for them to mail the refund out. Take a lesson folks, double check your returns it will cost you in the end. Just beware it can take up to 16 weeks just to be accepted!