Are you sure you sent it to right address? From which software did you create that wallet from? It looks like you sent the payment to a wrong address or you are looking up the wrong address on blockchain.info. Get your offline wallet backup and see if you see your 'Address' in it. I hope your PC isn't compromised because there are malwares which change your bitcoin address when you copy and paste them.
I have created multiple wallet address through bitaddress.org,performed the entire process offline and I have also sent the funds to the other wallet address in the past. It was all fine then. But when I have sent to other wallet address today it was not reflecting under blockchain.info. I have also received email from my exchange asking for a confirmation to sent it to the wallet address mentioned by me. I have checked it multiple times before sending the funds and the wallet address is the right one. I am not sure what is happening and how to trace it now. I have the private keys and will it help in anyway now? Please suggest.