Someone illegally displaying an old expired camper trailer LP drove through toll plazas. Rather than contacting and charging toll fees to the driver/vehicle operating a motorized vehicle in control of a camper trailer on the toll roads, a bill was sent to me. I have contacted CTRMA once by phone and 5 times (03-03 and 03-04-2021, 04-13 and 04-14 and 04-15-2021) through the website. I have received NO responses from my 5 messages. The person I talked to on the phone on April 13, 2021 kept asking me if I own a black Dodge Ram. I kept telling her that I do not and never have. I filed paperwork with the state stating that the old camper was gifted in January 2021. Any person in control of (i.e. pulling/towing) a trailer/camper trailer on Texas roadways is responsible for any violations incurred while in control of the said trailer. Either report the illegal activity to the authorities, which I asked CTRMA to do in my second message, or look up the pic of the LP on the black Dodge, which I assume was not displaying a toll tag, and assess all toll violations to them.