I totally got hit up by the irs for money thats nowhere near my fault, help?

i recently got a letter from the irs stating my wife and i still owe 1500 bucks from 2009. it continued to explain. she claimed 6000ish. the irs says her employer claimed she made 13000. ive already presented the w2 we filed with in 2009. and they still say she was payed 13000 dollars that year. ive done what the forms the irs sent said to do. and it didnt change anything. its like her actual w2 doesnt matter. i tried calling countless numbers, countless times. all off irs forms and websites. all automated with no way to contact a person and all with information not reguarding my circumstance. what should i do? im lost. they gave us a mere month and 1500 is litterally a month and a half of our combined income if we didnt pay our bills. were poor and live in a fairly bad area economically. most people here dont break 30,000 a year. how can i pay this? how can they make me? ive alredy presented the papers proving that she didnt make 13k. yet the irs says we are still responsible for the 1500 in taxes on 13000 she didnt even make! PLEASE HELP. this could actually put my family and i on the street. i have a 4 yr old son. and for those that find it hard to believe 1500 dollars can put someone out of home....get ur face out of ur butt. some people arnt so fortunate. half of the u.s. doesnt understand there are places where most people in the small town dont make 200 a week without any benefits to boot. i know the government doesnt seem to get that.