Rugby World cup Competition

this has happened before but yesterday it took the last straw. I enter the competition every other day because I buy coke a lot. yesterday I played the competition 1stly it said unknown application but my airtime was charged then I tried again then it said you are experiencing a lot of entries and I should try again, my airtime was also charged ridiculously not the 20c per 20seconds. then I tried again and it kept on telling me the same thing until my airtime finished. this is unfair, it you experiencing high entries then why charge us for not getting through as we still need to enter? I'm disgusted