problem with rolex service centre in uk.... gold tarnished help

[foxyuk]

I have a rolex president day date,,,

I fell about a year ago and the watch went to rolex for repair.. £3500 worth of repair... it was in and out for the last year as they always seemed to sort something unecessary and the original damage still there..

I got the watch back about 4 months ago and on the flush fit they replaced there WAS A GREEN TINGE! contacted rolex whom advised to use toothbrush and fairy liquid.... never worked so went back again.

The watch came back and seemed ok, 2 weeks ago went into the box and the flush fit dront and rear is green tinged and off colour.

Rolex have had it for a wee k now there explanation""""" flush fits are kept in cold storage and depending on length of time can tarnish, we will now refurbish the full bracelet in a water chamber using electrolisi and this wont happen again !!!"""

I DONT BELIEVE THEM IS THIS COCK AND BULL STORY? NEVER HEARD OF A NEW PIECE OF GOLD TARNISHING ... HELP?