Huge time company takes to get my Headphone replacing

Hello Sir/Madam,
I purchased Philips SBCHP400 Headphones In flip kart, it was working fine for 8 months and All of the sudden I encountered with strange issue, the sound of their Headphones inexplicably mess up, After some days suddenly became mute. After a couple of months I gave it to the customer service which is in Secunderabad. I had submitted my Headphone for repairing at service center at Authorized Philips service center, m/s united electronics services No:43, sarvasukhi colony, west marredpally secunderabad. Working order Number-47558000007132 They said, that they will replace the new set of Headphones within a couple of weeks, from date of submit but Three and half month already gone and still NO update is there at service center even at HO customer care. I went to the customer service center for several times But there is no response from there side, It is very surprising that so many days passed and nobody knows where is the headphone right now and what is happening at company level. Whenever I called at service center nobody picks up their phone no. 040-64632005/64632006 and if somebody picks after lots of call then he/she doesn’t know the current status and he/she says “ Your phone is in company itself and we don’t know when will be back” and “ We will inform you as soon as we receive the same”. This answer I have been hearing for long time. I Went to the customer service Center After three months, I was told that “we don’t have any update and it will take another week from now”. I could not note executive’s name and I said ok, please expedite as I don’t have any other Set with me and I am really stuck. After 10Days, I made a call to customer care again same statement I got that “we don’t have any update “we don’t know about it. And gave me the Manager Number Said to speak with him. And from a week I am trying he is not picks up his phone. This is really disheartening that I opted for PHILIPS, as huge time company takes to get my Headphone replacing. My headphone is under warranty and it expires now, now they will say that warranty has been expires. Now anybody is there to hear my voice and try to understand my problem so that it can be replaced with the new set. Seriously, I fed up with Philips customer services. And service centre people are not responding for customers. They are handling irrespective manners.