Lotto Sport — uncomfortable shoes

Address: Pune, Maharashtra, 411045

Good folks at Lotto please pay attention,
I bought a pair of Lotto shoes on Friday 13th Apr 2018 from Lotto showroom at Baner, Pune, Maharashtra. The product code is SLPL-1002 (F7V[protected].
When I started wearing it from second day, the left shoes is giving pain while walking. Some hard part of the shoes is troubling me near the thumb.
I went to the showroom to complain the issue. The employees there said below things to me:
1.You should wear this shoes for 3-4 hours only.
- Shouldnt I wear a shoes full day? or should I carry 2 pairs with me? Isnt a shoes made for walking even 200 meters on floor?

2. You should try thick socks.
- So for the right side shoe also I am wearing a thin socks. Its not giving any trouble to my right leg.

3.We dont exchange discounted shoes.
- So are you selling bad quality material under Flat 50 % OFF or so?

So there is a definate problem in left shoe.
As per my information Lotto is a big brand. And due to such responses the brand value is going down by a lot of percentage.
They really need to take this into account.