Sangeetha Mobiles — new phone memory slot problem... replacement needed.

Address:

Kanchipuram, Tamil Nadu, 600100

Purchased on 29-jan-18. Memory card not working properly.
Memory card working for few hours after that it is not deducted automatically. I have checked it for 3 memory cards. But the same problem exist.
I have taken it to the showroom for to solve the problem. They are not responding properly. They told need to take service center. I am asking why i need to go still it is new phone take only 4 hours.
I told to replace the mobile still it is under 1week warranty.

The mobile price is 1200, but i spent 120 now for transport.
We come for sangeetha for trust.
The branch manager told that they are only for sale after sale we wont take care. Very worst shop.
Need a quick resolve.