Bowens gemini 500r

[donnnnnny]

I have recently bought a 3 strobe Bowens 500r lighting kit for my studio.Purchased from B+H in new york, I have been sent the usa type which at 110v 13amp, when i switch them on i get E1 on the LED panel, which according to the manual is voltage out of range.no charge.
I have spoken to B+H who are happy for me s to send them all back and replace them.
They want me to pay for the freight both ways which when i purchased them was $460.
IS there any reason why the lights wont work with a transformer?? B+H said they will burn out.
MY dilema is i feel B+H should pay the freight both ways, they say they wont.
cheers donnnnnny