For those who are getting fax calls from 323-330-8886, its a line provided by Paetec Communications INC. However its owner is an auto sales marketing company called West Lake Dealer Services and their number is 1(888) 893-7937. You will need to call and have your number placed on their no call list. They call only what they think are auto sales businesses. If you are getting these calls, google your phone number and see if its listed anywhere else as well.
I was getting this calls for a while, and finally i called the number that somebody mentioned above
1(888)893-7937. They indicated me to fax my request at 1(888)267-1056, it's the only way to stop that calls. Good luck!!