Flashstar Commerce — product code 8040237 from myntra

Ordered allen solly shoes twice and both the time there was a different number of shoes i have received.
Ist pair was 6th and 7th size
2nd pair was 5th and 6th size

Flashstar ecom are the worst seller i have seen.
These people doesnt deserve to be on myntra or on any online place.
How can myntra be so irresponsible.

I need an answer for it