Delivery getting delay and false commitment by the dealers "KIA Sonet"

I have booked the HTX Imt black on 27 Sep in Car Automotive LLP at Jubilee hills,hyd. Promised and gave a commitment to delivering the vehicle within 4 weeks. But now increase to 8 weeks. Then also i did not receive the vehicle till now. I don't understand why they are giving false commitments. And also saying having issues in the manufacturing plant. It's the too worst experience.