Is there any chance of me getting back my Btc from an address which I was not supposed to send or even a chance of getting in contact with the receiver ?
well the transaction can't be reverse because you don't know whom you are sending to, all less you know the wallet you are sending the btc or the receivers knows the sender address then it can be reverse but since the two parties don't know way about it. then it seems you should forget about that transaction.