Domino’s Pizza complaint: two hour wait for cold pizza and an arguement

I ordered my pizza and the tracker indicated it should be delivered in 20-30 minutes.
After 50 minutes I called to inquire when the pizza would be delivered. I was told they were busy and it would be there soon.
1 hour 35 minutes later I called and asked for a status update. I was told they had attempted delivery but could not reach me by phone or door buzzer (which is routed to my phone). My phone was switched onvolume switched on. There was no indication they’d contacted me. They said the pizza was being delivered by another driver and would be there in 10 minutes.
In case there was a problem with my phone, I waited outside.
20 minutes later the pizza arrived. Cold.
I called them up to complain and they offered me a credit on future pizza. I don’t want future pizzas from there and asked for partial refund. This became a 20 minute phone argument with the manager who insisted they did nothing wrong and perhaps I should try keeping my phone on when I order pizza. he also insisted that I had not waited outside for 20 minutes for the second delivery attempt.
I have phone logs which illustrate what happened, by call timeduration.