No matter how I send my medical records, Reliance Standard consistently claims to have never received them.

I was taken off work at 22 weeks because of complications of pregnancy. My claim submitted on 6/30/14 to Reliance. My doctors office spent two weeks trying to submit medical records via fax and both fax numbers will not pick up, they just ring and ring, no answer. So on 7/23/14 my doctors office printed them and sent them via snail mail. Eight days later, Reliance is still claiming that they have not received any records. I am beyond frustrated. I’ve had no income for almost a month. What can I do to try and get these records to them?? My bills are late, my credit is suffering and I can’t do anything about it. Please give me some advice, it would be much appreciated.