What is the display and teach pad price of tecno camoni i air 2 plus

I have a problem with my headphone so can get help from you reply

I m change my mobile folder an how much pay in serving charge

My tecno camon i air 2 mobile phones audio is not working.how i fix it.

I have a good experience with the service center of techno mobile at Guwahati but the dealer viz Nayim is a thug who cheated me and old father with the price of the set and never received our called on him at need. However his cell no is 8876282304. Kindly take an action against him remove him from the dealership and kindly don't entertain Muslims in future please.
Thanks.

My phone became crack from the bottom side n my phone display doesn't working n camera is also became crack ...need servicing plzz ...my phone is Techno camon 17 ..I jst recently purchased it