Sony India — sony xperia xa1 ultra mobile phone

Address:

Durg, Chhattisgarh, 490006

The screen of my phone has been damaged so i went to nearest service centre of sony. And they informed me that sony has stopped manufacturing the mobile phones hence the screen of my phone cannot be changed. Rather if i will pay rs 18000/- they will give me a new mobile which will have warranty of 3 months only. I want to know if sony stops manufacturing a product than what is the customer's fault. Why do i have to pay for a new mobile whereas the new screen would have costed me only rs 6000/-.