HP India — booked a laptop on 19th june, till date i have neither received laptop nor payment

I have ordered a laptop., model no ay503tx on 19th of june. I made my payment through credit card. Bt even after a long wait i havenot received my order. I called many times on customer care no regarding status of my order bt they couldn't give me satisfactory reply for delay.. On 15th of july they again dispatched my order through fedex courier bt when i track my courier id it was shown tht order cant be delivered on given address. Finally on 18th of july i cancelled my order. They again commit me to refund my money within 72 working hours. Bt it is 31st of july and still i havenot received my money bak.in between this i called 3 to 4 times for my refund status bt they didnt give me any info about my refund and said they hav registered my complaint. It is a case if high irresponsibility and look like they dont want to give my refund.. Really is hp so irresponsible towards thier customer?? They theft money from us??