Lenovo — lenovo k5 note mobile: repeated microphone hw issues

Purchased lenovo k5 note in sep'16. Within one year microphone stopped working while in active call. Got replaced the sub board (Charged rs. 1600 for this) in authorized service center in i-pick solutions, noida, sector-10. Again, same issue repeated after 4 months and they are suggesting to get it replaced again else contact customer care. And believe me its very hard to catch customer care online. You can just submit your request, that's it, nothing more.

Isn't it a recurring burden on consumer just because of poor quality of lenovo product and its repair service. What has company done to fix the problem as it seems a common issue in this model at least what i see from community "lenovo forms".

Is there anyway other than throwing it in bin and purchase some good quality product, not at least from lenovo? Very bad experience so far.