Xiaomi India — MI wireless Earphones 2/ Received a fake product after replacement from service center

Address:

Rajalakshmi Electrovision, Kottur swamy mutt complex, 1st Floor d.no: 451/452, Hospet- 583201

I brought MI wireless earphone 2 on 13 July 2021. A month ago there was a cracking noise in my right earphone, so I gave it to a service center for replacement. The complaint was booked on 28th August 2021. Today(31st August 2021), I received an SMS saying that your replacement product is ready to pickup please visit the service center. I went to the service center and took the product. I took some photos and sent it to my friend as he was not believing me that they will replace the earphones instead they would repair and give it back to you. I went near my bike outside the building and opened the product there was a pair of stapler pin boxes. As soon as I noticed that I rushed back to the service center but they were closed. I called them, they told me that they were at lunch break and they will open the store at 3:30. So I didn't go home and waited in front of the service center. I was there at the store from 1 pm to 5 30 pm and still, my issue was not solved. I called customer care they heard my issue and told me to wait as they were putting my call on hold and I waited for half an hour no one answered back the call. So I came home. I tried to verify the S/N of the product and I got, No Serial number found as a response. I requested customer care to solve the issue but they were constantly saying that we need video proof, The product was brought from MI authorized service center so I never imagined this kind of fraud would happen so I didn't even had any idea that I have to videotape the unboxing. I was not even suggested to open the product at a service center, so I took the product, went out sent some pics to my friend, and opened and there were staple pins in it.
I request you to provide a replacement for my product. If there is any way to track the original product I would suggest tracking the product and give me the same. I have spent a lot of money on earphones and this is not fair to get 2 boxes of 5rs stapler pins. Please solve my issue as soon as possible. I have attached the Invoice, Inspection sheet, Picture of the box before and after unboxing, all the barcodes present on the box(S/N, SKU no ( All the photos taken were from mi service center).