I have to say, the shop girls are usually very nice. Mind you, I am nice to them first. I mean seriously, aren't we supposed to be nice to other people? A smile and a thank you are common courtesy, nothing more, nothing less.
And about MANGO, I NEVER had a problem in any of the Mango stores here in Qatar...rather the opposite.Very nice and helpful , especially the Manager in the Mall store and one of the sales guys in Villaggio.