Pizza Hut India — no refund

I ordered a pizza on 7sept, 2019 order no. 12699085 in the name of radhika devedi and delivery address was sector 44 noida. I ordered the pizza online and there it was showing that they will deliver the order in the area. Then i ordered it and it got accepted and i got the notification that it is being prepared. After that i got a call from pizza hut itself saying that they do not deliver in this particular area. I said cancel the order and initiate the refund. They didn't even cancel the order and it's been 10 days already i didn't got my refund. They keep on calling me and say that wait 2 days and i've wait 10 days. I need my refund because it was them who neither cancelled or delivered the order. Please help me with the issue.