Nokia India — mobile service issue

Address:

Ernakulam, Kerala, 682021

Dear Sir/Madam,
I am writing this letter to bring your attention that I am not satisfied with your quality of services provided. On 29/06/2017, I purchased one NOKIA 230 mobile handset from Imperial Mobiles, Shop No: B.20, Penta Menaka, Cochin, Kerala. At a price of Rs 4100/- .
After a few months my mobile shown some minor fault like its incoming sound became so feeble to hear. But I didn’t take its as a major issue by thinking due to network issue, but finally I realized that it’s the problem of the handset and need service. So I reached authorized Nokia service center in Cochin located in near PT Usha Road, MG Road Ernakulum on 26/0612018 before expiry date of its warranty. But unfortunately the service center executive has told me that Nokia India stopped the service of the above mentioned model handset and to be returned to retailer which I have purchased the same and will be replaced the handset with a fresh one. So I approached the retailer to get replaced my mobile.
The retailer first opposed to accept the same and after a quarrel I handed over the same to the retailer to be replaced. He told me to wait for a couple of days to get the handset replaced since he has to contact Nokia service in order to confirm whether the handset is come under Nokia replacement policy.
After that I contacted the retailer several times, but they are telling like the model is out of stock and no longer available, so Nokia advised them to replace the handset with some lower end model worth Rs 2100/- something. I am not ready accept this cheap trick.
This is truly a case of cheating and betraying its customers if it happens with the consent of such a big brand like Nokia. So please do the needful ASAP.