Lots of play in 2015 Ford Ranger tow bar

I recently purchased a 2015 Mark 1 Ford Ranger dual-cab, fitted with a genuine Ford tow bar. The tow bar in question has 20 mm play overall up and down at the ball and 10 mm side movement. I went to a 4WD store and they rang another tow bar company; their advice was to sleeve it due to the amount of movement. They also suggested I go to Ford as it may be a warranty claim given the amount of play. Anyway, some young service guys looked at it, and said it was acceptable. I asked for the name of the manufacturer, so I could ask them for the allowable tolerances of play as I did not feel safe having my caravan bouncing around on the back of the car. I was told they have no idea who makes them, nor do they know what the tolerances are. They were not very forthcoming with any information. I voiced my concern over the stress on the pin. Have other Ford owners complained of the same thing?