back up restore help

can anyone help me plz!!!!!!

i backed my whole data up on to itunes from my iphone 4 yesterday because i was taking my phone for realir to an apple store but when i got there...they gave me a new iphone so when i came back i tried restoring my back to my iphone it goes through as if everytin is gna be back on to my iphone but afta 15minz of waiting for it.... wen i go on to my phone to check if i have got evryting back but i realise i just have my contacts back but nothing else so i spent whole of the day trying to figure out how can i get it back but havnt found a solution because on the itunes it says this iphone was backed up yesterday at 11:52 wich the day is right and the time is right so why cant i get my appz,photoz and games back for which i downloaded from app store???? can anyone help plzzzz??????