Domino’s Pizza complaint: Double order

Accidentally double ordered on.line .One delivery at 615pm and another 630PM. I WAS OK with it because I considered it my mistake. But when delivery came a 2nd time I was unable to get the door as I recently hurt my back and couldn’t get to door.So my autistic grandson answered the door. The order was the exact order as previous one.$23.01 My autistic grandson gave him $30 and then gave him another $10 2$5’s He was confused by what the delivery person said about change back and then.my grandson gave him the $10 and said keep the change
So the delivery person walked away with a $17 tip.I heard the conversation and by the time I got downstairs he was gone
I could have sent the 2nd order back but I thought I would do the right thing and pay for it .So I’m to say the least disappointed. I’m asking for a refund of the 2nd order. The delivery person can keep the tip but someone should make this right. Thank you for your time Catherine Freeman

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