When they ask you 'where else are you interviewing...

When they ask you 'where else are you interviewing at the moment' DO NOT TELL THEM. They will use this information against you, call up the companies themselves to try to sell their services and get a new client!

They don't care about candidates at all and have ruined an opportunity for me. They are deceitful, greedy and not to be trusted. Much better recruitment agencies out there.