Enterprise Rent-a-car Tried to rip me off atlanta Georgia

I got a letter from this company almost two weeks ago and it stated that i had rented a vehicle from them on april 30, 2014 due to a loss. First thing I did was send an email to the email addresses provided and then during normal business hours I tried 4 different times to call them. First try I managed to reach someone and i then proceeded to give them the claim number I was calling about and then told them that the letter was also to nicole davis and that was my maiden name and i hadnt used that name in almost 16 years nor had i been out of the state sinse my brother lived in north carolina and that was at least 25 years ago. The man then told me hold on i will transfer you to someone. I held on for a couple of minutes then on the other end i heard the phone ring like 15 times then i got a busy signal and then silence. Well I tried three more times to phone them to no avail. So then I sent another email and still have not heard anything back. I told them i intended to place a fraud alert on my credit because the amount they were asking for me to pay was crazy anyway and i didn't want that non payment to go on my credit in a negative way when i didn't create the bill to begin with. It totaled almost $1,000.00. They were only giving me 10 days to even submit the payment in full and they had said if i preferred i could make my payment using a debit card, or credit card or directly from my bank account at the following website: claimtopay.com which is not even a secure website. The whole thing just really seems fishy to me. I refuse to pay what I do not owe!!!!!!!!!!!!!!!!!