total disappointment

I purchased a whole case of coke the 330ml and as you know coca cola is running that competition , each and every bottle i open is not allowing me to enter the competition iv kept all the lids just in case of proof needed , i have emailed coca cola itself but there was no response from them at all please get back to me asap because this is not the first time i am expeiriencing issues with the coca cola company, we support u guys and urls product and yet we are left with such pathetic service