Lenskart — Bad Staff Behavior

I ordered my eyewear from Lenskart HazratGanj Lucknow Store, I have assisted by Sayed - lenskart staff. I had delay in delivery because of him, when I informed him I updated power of my eyewear he did not updated by his end. Now expected delivery date is different than what was before and now when I asked him on delivery day morning he behaved in bad manner and he shouted along with abused me as well. I called on his personal number. I think this behavior should not be accepted, and he is blaming a brand here. Because of such employees entire brand gets blamed. Please take appropriate action against him.