A collection agency ( Escallate , LLC. ) is threatening me with a negative credit report. 
A notice was received today that I owe {$140.00} for medical services ( XXXX and XXXX XXXX ). 

The bill for the services was never properly explained just sent out to me for payment. 

I have XXXX coverage and a supplemental policy through XXXX for the XXXX service. Payments were made by XXXX and XXXX and an unexplained remaining amount billed to me. 

I never received any explanation and have not paid the unexplained amount. 

Please help me resolve this abusive practice. Thanks.