Sony India — non providing tv in exchange of old one with advance amount

Sir,
I had handed over my tv model no. Klv-32bx320 in5 as there is a display problem vide job no. J81206824 to your service centre - smart services at vijayawada.
They have informed that said display is not available and they offered 25% discount on new tv with the exchange of old one. I had paid rs.29925.00 vide dd no.50060, dt.02.06.2018 fvg. Sony india (P) ltd., handed over your service centre on 04.06.2018.
Even lapse of 18 days, i was not received tv. They are not giving proper reply for the same. Some times they are telling that it take more time ie., another two weeks.
I have complained to you vide toll free number. Still the problem is not solved.
While accepting the dd said service centre informed that, i will get the tv within 10 days. Even after 18 days lapse of time nothing is happened.
I am very sorry to say that, this type of act hurted me a lot. Please look into the matter and immediately provide the tv.

Mnb kumar