A close friend of mine has blocked me on WhatsApp. I need a technical solution. How do I unblock myself?

1. Find a helping mutual friend named X.
2. Create a WhatsApp group, add X and make him also the admin.
3. Tell X to add your close friend.
4. Ask X to leave the group.
5. Its done. Message anything in the group, it will be delivered to your friend of course.
   This makes you literally unblocked, however, there is a chance for leaving the group by your friend again. Else all in your hand, to explain your side and get unblocked really ;)