Pepsi
3 bottles flat as no gas at all

My family and i drink pepsi max and pepsi we have purchased three bottles of pepsi in two days 9/3/10 and all three of them we had to pour down the drain they were flat as no gas at all very disapionting considering you buy the product because its a fizzy drink would like some compensation would be good can you please send me a email back to what action will be done