Last week I received bill from collection agency TRANSWORLD SYSTEM INC. for {$67.00}. This is the amount that reminded after payment made by my insurance XXXX XXXX. As per XXXX letter that was sent to the provider 's billing office I am not responsible for any payment. I spoke numerous times with representatives from the provider 's billing office and XXXX representatives. During my last call to XXXX on XXXX/XXXX/15 I brought up my concern to their attention that this could be sent to a collection agency. I was told my case is urgent and will be escalated.