EAD (WorkPermit)

I had raised a request to expedite the EAD process over phone. I waited one week and didn't received the letter from USCIS asking me for send additional evidence such as job offer, financial loss. Then i called USCIS to check the status on expedite request, the lady on the phone told me a letter has been send to me asking for evidence. she gave me fax number and reference number where i can fax the job offer. I send fax same day. But after 4 days i got the letter from USCIS asking me to send additional evidence such as job offers. on the letter it was mention to send back a copy of their correspondence.

I don't know if i need to send the fax again. what is best thing to do now. Please anyone has any idea what will happen if USCIS receive the Fax without the copy of their correspondence.