Lost iphone back-up password?

Basicallu i had to replace my iphone today so apple took my broken one, so i want to back it up from my previous data and so whaats happened is that it needs a password and i've typed in all known passwords and none of them are correct how do i get the password back? Orr is there a way to get it back?

Contact Apple Support by email or telephone

Apple Customer Care Number: 0845 600 1683

Password is nedeed as we all know, to get back try with your all passwords.
Otherwise, last one option take support of apple help center.

You need the backup password on your iPhone! I have used the "iPhone Backup Password Unlocker" to reset my encrypted iPhone backup password Windows! It is unbelievable for me! Just 3 easy steps! Now, all my contact address, call logs, etc. Are back!

Read support on How to unlock password to iPhone encrypted backup:

http://www.guidemyjailbreak.com/get-jailbreaking-help-fast/post/2044884