Google — pixel phone mic and headphone not working

I purchased my pixel - silver 128 gb in oct 2016, and faced issues with mic and headphone within 3 moths of purchase. As it was covered under warranty, i got the phone refurbished - twice, as the fault was back after the first refurbish. After 1.5 yrs, the issue has come back now again and i am asked to pay inr 23, 000 to get it repaired. I bought this phone for inr 65, 000 and it is very unfair for any customer to be investing so much on a phone that has such poor quality. The service and support from google is very bad that they refuse to accept their faults and provide a replacement.