Labels problems of the 2018 Ford F-150

I purchased a truck in March 2019 ,it wasn't up to the specs represented, the dealer swapped the truck for another new 2018, on April 2019. The problem centers around the trailer hitch being represented as a class 4 hitch on the option package yet its is clearly labeled as only a class 3, up to 5000 #'s on the label on the hitch itself. I am not getting a definite answer from Ford or the dealer as to what the towing capacity actually is at this time. Ford refuses to send the proper hitch to the dealer to install and I've been given conflicting answers as to what it is rated for, and why the window sticker on some trucks say class four ,but the label on the hitch says only 5000#'s. The dealer went by the options supplied with the truck when they swapped them in April, only to find out that the same problem exists with this truck. I am concerned that if I tow my 7000# trailer I'll be out side the legal limit for the hitch, also it could be exposing myself and others to an unsafe condition. I have contacted mr. Maurice hicks at d. O. T. And have passed along to him pictures he needed to identify the problem. He suggested I contact safercar to start the process . Myself and the service manger at the dealer examined several new trucks on his lot and discovered that it seems to occur commonly as to the option package with the truck and / or the window sticker on the truck don't match the labeling on the hitch itself, saying class 4 but labeled for a class 3. I haven't been using the truck for over 4 months to tow anything over the rating on the label.