Staff not helpful

After taking my engagement ring to be resized I asked about a claw that was slightly offset only to be told that with that cut of diamond the claw will be slightly offset and they could not reshape the claw. This was acceptable as it was only 1 claw. After 4 hours of waiting for the resizing I was given the polished ring only to find that the diamond was loose and that all of the claws had moved. There was no apology as to why they hadn't noticed this bit sent it back to be tightened. After tightening the claws I recieved it back with all 4 claws of set now and a scratch out of the platinum. After complaining again and with no apology they sent it to be repolished. Another hour of waiting and I eventually recieved the ring back with now all 4 that are offset but have been told there is nothing they can do about this. An apology or prior warning about this would have been appreciated. I would not recommend buying a. Ring if you do not know the exact size as the staff are no help or are not polite