HTC — worst service provider

Address:

Khordha, Odisha

i have visited thrice to the nearest htc service center due to malfunction of my ear phone and i have one year warranty to my product. on my 1st visit customer care told me they have no ear phone in their stock so come in day after tomorrow when i went on that day that was my 2nd visit they received complaint and on the day which is written to be the delivery of repaired piece of my ear phone which was today and my third visit, they told me come on another day... so my problem is how many time i have to go to that service center ?? please provide remedy to this..