Exterior door installer needed

I have purchased an 32 X 80 Exterior Door with frame from Home Depot for the back door of my house. I had a guy supposedly all lined up to install it but he suddenly can’t do it. The door that’s in there is a 30×80 and is awful… doesn’t close without deadbolt, doesn’t seal so let’s the cold air in bad!
Does anyone know how to install this for me as soon as possible?!
Please let me know ASAP

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