Nykaa.com — the system

I had ordered a product and it got returned by itself and I was not notified about it. And when I asked them about it (on phone) they seemed to be not know what was the issue. I wanted to know about what happen that it was returned when I did not ask of it to be returned but no reply. They only said sorry.
Again I ordered but the same think happed.
Very irresponsible people and no proper management
Bad customer care mangement