Don't hold your breath MB - I sent Gems a complaint last Friday which they didn't bother answering.
When I emailed again to chase it up yesterday, I got an email apologising for not answering the first one, but not responding to my original complaint.
It was also addressed to 'Dear Mrs Harper' which is nothing like my name.... assume they meant I was 'harping on' about something.
Anyway they may well have lost my custom as well now, it doesn't seem worth the aggro to buy from them any more