Myntra.com — return product put on hold

Address: 416115

The shoes i ordered was with size 6 and same was written on the box but actual shoes (Product) received was of size 4.
When i tried to return the order it was put on hold even after mentioning the issue and same was shown to pick guy.
Tried connecting to the myntra but didn't received any call back even after trying several time.

Product no: lj-15317b