Asus India — asus zenfone 5/ not working properly

Address: Amravati, Maharashtra

My mobile handset is not working properly, audio and video issues, lagging and even it is an old model with expired warranty. I went to the service centre and they told me this.
Just few days been passed, i ordered it from flipkart. It is maybe used mobile phone. I need you to refund my money and get your handset back or at least exchange it with new phone.