I lost my Sim card and cant bypass the puk code it is blocked

I need help. When removing my sim card trade I accidentally pulled it out to fast and my sim card flew across the room and I cant find it no more and my bill is long over due. So I decided to insert a new sim card in for some odd reason it is telling me insert a puk code in and when I put it in I got a inncorrect message. My guess because it isn't a at&t sim card. Is there a way if I were to get a new sim card from at&t, Will that by pass it? I went to a at&t store and they was like they have no idea what it is and told me my best bet is Google. I see no help in that.