i have received similar kind of service from The Different Company. they were extremely courteous to me. They have sent a metal cercle and cap since mine had a dent..and also a sprayer (my rose poivree sprayer used to spray a stream and not a mist)...They very gladly sent across both the items with a nice note. What is worth noticing is that they sent it all the way to India.
Glad to know you got similar service from Amouage