Bad attitude of Mango ground staff during delays!

Flight delayed in excess of 5 hours (although they boarded us after 3 and half hours, and we sat in the stationary plane for almost 1 and half hours. ) No refreshments offered, no assistance for elderly who had to stand for many of those 5 hours! Nor for young mothers trying to cope with babies or toddlers!! Food voucher not redeemable on board, and all eateries closed by the time we reached Durban. Luggage so wet that clothing and other personal belongings wet and damaged on the inside. They must have left luggage standing in the rain for hours. Today they will give me a discount voucher to compensate for inconvenience, but yesterday they refused to swop my flight out for next day as \this would cost Mango money". Very unhelpful"