2003 VOLVO S80 Unknown Or Other Problems

CARRIER BIKE RACK AND 2 BIKES FLEW OFF THE ROOF OF A S-80 VOLVO(2003) WHILE DRIVING ON THE FLORIDA TURNPIKE.LUCKILY NO ONE WAS CLOSE BEHIND AND I WAS ABLE TO REMOVE THE WRECKAGE FROM THE HIGHWAY.I COMPLAINED TO VOLVO BUT THEY CLAIMED THAT IT WAS MY FAULT.NOTHING WAS REPLACED.SOMEWHERE IN THE MANUAL IT SAYS TO CHECK THE RACK.THERE IS NO WARNING LABEL ON RACK AND AS IT IS ENCLOSED THERE IS NO EVIDENT WAY TO SECURE.THERE ARE FINGERS IN THE SLOT ON TOP OF THE CAR BUT THE ROOF MATERIL IS SO FLIMSY THAT IT APPEARED TO HAVE ENOUGH GIVE SO THAT THE ROOF RACK COULD DISENGAGE.VOLVOS ATTITUDE ISS THAT THE DRIVER MUST CONSTATANTLY CHECK THE ROOF RACK. IF THIS IS SO THE LEAST THEY COULD DO IS PUT A WARNING LABEL ON SAME.I AM FOTUNATE NO ONE WAS INJURED BUT I THINK THERE IS A SERIOUS PROBLEM.I HAD A...