Am quite cross. Booked a Haven caravan holiday offer in the Daily Mail last month. Was supposed to be £60 for three nights. They've just written to say they want another £70 for site fees, gas and electricity. AND they've changed the caravan we booked to one with no heating and no double glazing - in North Wales in October!
So, if you've taken up this offer, be warned you'll have to pay extra and you won't get what you originally paid for anyway...