Dell India — dell service center damaged or stolen my xps 13 battery

Address:

Hyderabad, Andhra Pradesh, 500072

I gave my dell xps 13 laptop (Premium laptop - cost around rs. 1 lakh - out of warranty) to dell authorized service center - laptop store, 210a, vijay sai towers, kukatpally, hyderabad - 500072 for keyboard replacement on august 20th 2019. It had no other issues except keyboard issue. (Receipt attached).

I collected my laptop today on august 23rd, 2019. After keyboard replacement, they found the battery to be dead when a diagnosis was run. The service center is claiming that they did not perform diagnosis before keyboard replacement. So, they don't know whether the battery was working or not working prior to replacement. But i am very confident that the battery was working perfectly fine when i submitted my laptop to them. The cost of the battery is rs. 12999 on amazon (http://tiny.cc/qmrmbz)

So they may have either destroyed the battery during the keyboard replacement process or simply stole my good battery and replaced it with a defective one.

Attached is final bill for keyboard replacement.

They have cctv footage of the service center, so i would like to get access to the footage to figure out what happened to my laptop's battery from august 20th 2019 to august 23rd 2019.