Boat — I'm complaining about my previous complaint being unanswered

My earphones ear piece is not at all working and sometimes when it works it makes a lot of disturbance also the mic has similar issues.
It has no physical damage.
I previously mailed regarding the same but it's been a long time and yet no one has responded.
I'm fed up by the customer services provided by boat.
Also they are asking me to go to the nearest service centre which is about 20 km away and I'm unable to do so due covid cases uprising.
I'm never ever buying anything from Boat and I'll suggest everyone the same.