Harris County Toll Road Authority No one answering! HELLOOOOOO!!!!! Houston Texas

When my credit card number was stolen my bank disabled it without warning.  I used the toll road admittedly.  I have made a valiant attempt to pay my tolls and fines. I knew I had fines, although, I had not received any document in the mail.  I called the Harris count toll road authority for a week, waited on hold for hours, getting disconnected, or having to hang up to deal with work or other things.  The number I called was..281-875-3279.  After 7 days I finally got through to speak to someone and I was told that my tolls had been sent to collections. When I asked why I had not received the letters in the mail the woman argued that they were sent to my old address. I told her my "old address" was my parents house and that I still would have received the documents HAD THEY BEEN SENT.  I was also told that now all my tolls had to be paid through the collections agency.  I was given the 713-576-7202 number to call.   I have called this number repeatedly and NO ONE answers.  It either rings and then goes to a busy signal or it sounds like someone picks up but no one talks and then the call disconnects.  I know in 2015 they had repeated billing issues and I received letters stating thatt there were issues and to disregard any tolls during a certain time period.  I would like to make a payment,  I just don't know how to do because no one picks of the phone to receive my payment!