Hathway Cable & Datacom — non availability of my refund

I had installed my hathaway cable box towards the end of feb 2018 by my local cable operator mr dilip udani mobile no [protected] and i paid him by cheque the full amount for the year which was about 6000+.
However after a few days i could not view certain hd channels so i called him to take the box and give me a refund of my money which he had promised.
It’s been 4 months and after numerous phone calls to him he has not come to take the hd box and has not even refunded me my money.
Did not expect such bad service from hathaway.