Why?

i did this survey/iq quiz on the earn free zp page, i confirmed the code that was sent to my mobile phone, and it said i had answered 4/10 questions correctly, and i still did not get my z8games points/ ZP points. why has this happened? i looked numerous times and it has said waiting for offer to report for almost 10 minutes, i checked back 5 minutes later and no Z8games points/ ZP points, but it says viewed, Missing these zp? i sent a ticket or whatever its called a complaint, and it never replies. please help