We people are generally stuck when somebody block our Whatsapp account, but now need not to worry ! Solution is here, just follow these steps:
1- Firstly Check If Your Friend’s Profile Picture or Last Seen or Whatsapp Status Are Visible To You or Not, And If Not Then You Are Blocked
2- Open Your Whatsapp Messenger
3- Goto Settings Then Click On Account
4- Now Click On Delete My Account
5- Enter Your Mobile Number And Delete Your Account
6- Now Uninstall Whatsapp From Your Mobile
7- Restart Your Mobile
8- Download the app again, Fill Your Mobile Number And Other Details
9- Now You Are Unblocked From Your Friend’s Whatsapp Account