Lenovo — No communication from lenovo on DOA for a Tablet Submitted at their service center

This is regarding my recent purchase of a Lenovo tablet from Reliance Retail, I purchased the tab on 26th July and on 28th found the tab screen had a malfunction(image attached for reference)so when I showed this at the reliance outlet they told me that the product has a defect and needs to submitted at the Lenovo service centre in Andheri. So I submitted the piece at Andheri on 30th July 2021 for a DOA (Job Sheet No: LJMH[protected]). Nikunj and Anup at the service centre assured me that Mam DOA does not happen in a day as the product has to be sent outside to the technical team who will check the product and then issue a DOA which takes two to three days and you will get a mail on the same from Lenovo.
As I received no revert from Lenovo on 2nd August and called the service centre Nikunj tells me to wait for one day as they too have no update on the same.

Now on 3rd August when I call the service centre and speak to Nikunj he tells me Mam you will have to wait as we have no update or you can call customer care to get updates and gives me the number.

The customer is waiting and the brand does not feel the need to get back to the customer, what a pathetic state.

Now as I call customer care the agent tells me that Mam for a DOA you need to put a mail to [protected]@lenovo.com with 6 side photos of the Tab so that DOA can be issued.

Now my query is why did the Lenovo service center not tell me about the mail to customer care?
How am I supposed to write a mail with product photos when the product is already submitted to the Lenovo service center?
Why is the Andheri center delaying the process? When I call them again to give me photos of the Tab, Nikunj is busy on a call and the other guy says he will call back but Nikunj does not revert, now how do I get the photos of the tab for a DOA?
Even today they ask me to wait for a few days for an update why is it that nobody has a clear picture of the process?
How do you expect customers to buy your product when your employees have no knowledge or fool the customers with wrong information?
The customer care agent tells me that mam the tab does not go out from the service center, it is checked by the service center team in the Andheri outlet. And Anup & Nikunj tell me that the product will be sent out to the Lenovo team, will check the product and issue the DOA.

Three employees from one organization giving different information to a customer.

What kind of brand standards do you lay and why will a customer buy A Lenovo product whose customer service is so poor?

I highly regret buying the Lenovo tab.

I still have no clue on what is going to happen on the Job sheet raised, Expecting an immediate closure on my issue.