Priceline complaint: Priceline booked me for an impractical trip

I booked an international trip via Priceline. The itinerary was

COK – DOH
Kochi Intl Airport to Doha Intl Airport
10:15 AM – 12:05 PM
Qatar Airways Flight 515
4h 20m
Economy Class – Airbus A359
1 Layover in Doha (13 hours 30 minutes)
—————–
DOH – IAD
Doha Intl Airport to Washington Dulles Intl Airport
01:35 AM – 09:20 AM
Overnight Flight
Qatar Airways Flight 709
14h 45m
Economy Class – Boeing 777-200LR
1 Layover in Washington (3 hr 40 min)
——————
IAD CLT
Washington Dulles Intl Airport to Charlotte Douglas Intl Airport
01:00 PM – 02:29 PM
Operated by PSA Airlines as American Eagle
American Airlines Flight 5336
1h 29m
Economy Class – Canadair Regional Jet 900

Basically, at the time of booking, there was a layover time of 13 hours 30 minutes in Doha and 3 hr 40 min in IAD. Later, they changed the layover time in Doha to 21 hours which would arrive in IAD at 4:30pm. And I am supposed to catch the 1pm flight from IAD to Charlotte. There was no airport accommodation available either in DOH or at IAD.

I stood in the line for hours in the IAD Airport to schedule me for the next flight which was the next day.
Priceline was supposed to call me and inform of this change. This is one of the worst travel I have ever had.