Business PCs, Workstations and Point of Sale Systems

I have been following up since Oct with HP customer care. I had a care service warranty in my laptop, during which I had raised a complaint on Keyboard (in late Aug).It took almost 20-25 days for call centre to figure out that its a keyboard issue (before which they were going to format my laptop for display issues) In Sep they finally arranged service while my care pack was thankfully active with a month left for warranty. The hp care team, damaged other part of laptops while fixing the keyboard due to engineers fault. It was a simple keyboard fix for which they damaged earphone jack, then they said entire usb/earphone jack chip will have to be replaced, after doing so the windows went blank and kept hanging (they couldn’t switch it on), they figured connection between motherboard and this chip is damaged, so they got a new mother board to sync with this chip, again same was not working properly .. so they changed the mother board again with a new usb chip. All this happened in Sep and post that i was only able to switched my laptop on twice and after that it did not turn on till date. Unfortunately in this time my warranty expired. I have logged a complaint with call centre since 31st Oct and have been following continuously with them for 4 months, but they failed to provide any solution (since laptop was outside warranty now. they said i will have to pay consultancy charges and also if any damaged parts then I will have to bear charges for same). Why should I bear charges for something HP services team damanged. Each time (6 times till now) I call they call center they said they are trying to take an approval of waiver, but there is no proactive communication (email or call back) from them and no proper resolution for same either. I regret buying such a high end laptop from Hp. The trust is completely tarnished with such a bad experience that I had never faced earlier. I was on a call sometime back, now only hope is that they will come back.