Home Depot review: Delivery service for refrigerator

I purchased a refrigerator from your store at 6000 S Gun Club Rd Aurora co. on Dec 5th. I set up an appointment for delivery Dec 11th. I received a text message on the 10th that my delivery time was on the 11th between 2:30 pm and 6:30 pm. This refrigerator is for my 89 yr old Mother in law who lives alone. I drove to her home 45 minutes away arrived at 2:pm so I could hook up her copper line since the delivery guy won't. At 4:30 I received a text saying Home Depot can't complete my delivery? Advised they would call for a reschedule. No explanation why. Call the store 3 times until someone answered and told me they had no idea why either. I was told I could not contact the delivery company they would call me. I waited until 9:30 the 12th no call. I called the store a lady Connie advised she would call the delivery company. She called back 50 minutes later advised no one would answer to wait for a call 24 to 48 hours. My mother in law has been without a fridge for 7 weeks. We went to Lowes first they had issues getting fridge. So we came to you hoping for better service and sooner delivery. Were is our Fridge!