Tough call, but I would tell them either honor the previous offer or you cancel.
Buying bikes from overseas is a challenge anyway, so this could be a blessing in disguise.
Agree with this and you are already having problems.I would pull out.
But if you really want A Rose,just stick it out.
I change my mind so much about which bike I really like the most.
And I looked at one time maybe buying A Rose,Cube and few others bikes from out of country.I wanted something different.The prices seem way better A few years ago.
But so many good bike brands and choices in the USA.I would try to buy local.
And dealing with any warranty issues if needed should be easier.
And if you are interested in weight/$$ ratios.Check out the weight weenies forum.
They have lots of info on low weight bikes and items.Roadbikereview(Euro) forum might have some Rose owners. good luck