The Mobile Store — Misconduct and delayed customer service

Address:

Kolkata, West Bengal

I am really unhappy with the kind of service given by the Hazra Mobile Store kolkata with address Shop No. 55B, S.P. Mukherjee Road, Hazra, Kolkata - 700026 . They sold me an HTC ONE E9 plus and after selling it they did not give me a proper bill, i paid exact price without discount they sent me the bill later by mail and a manual bill with stamp.They do not gave me a demo of the new phone and handed over the phone to a lay worker who just configured the sim since then am facing issues regarding set up, installation and mobile data, infact the left speaker is not working properly and the phone is becoming hot, they are not helping me and asking me to go to customer care, since I am a busy employee is it what I am supposed to do with 7 day old phone?Even they did not gave me norton security code antivirus.kindly help otherwise I will ensure to take other actions against the store.