Godrej / air conditioner (18FM5) — digital display not yet fixed even after six months of purchase

I have purchased 1.5 t split AC (Godrej 18FM5) from M/s Digital Vision, Opp. All India Radio, M.G.Road, Vijayawada, Andhra Pradesh, Vide bill No. ACN00122 dated 05.08.2009. Company personnel came and installed the Ac, without digital display. They told they will come and fix within two - three days. As on date nobody came and fixed the same. I cannot know, what temperature i set on AC. I called several times to the supplier, send persons to the supplier, but in vain. After spending more Rs. 25,000/-, I could not use the Air Conditioner properly.