BIG MAC MEAL AT R19.95 - ONLY 1 PER CUSTOMER

We went to the McDonalds in Cantonment Ave, Lyttelton this morning. The lady said we can get coupons for this promotion. We wanted to order 17 meals at this price. This is a promotion and now where is stipulated that it is only 1 meal per customer. When trying to get the \Big Mac Medium Meal"at R19.95 they said we can only HAVE ONE (1) MEAL per customer. This is unacceptable. The lady was very adamant regarding this - ONLY 1 MEAL!! After contacting other branches we could have 2 and more Big Mac Meals at R19.95. After complaining the lady wanted the coupons back but I refuse. """