Extended Stay America

My Experience in this hotel was perhaps one of the most painful in my life. I was a guest in your hotel at Herndon. After my check-out on Friday, I left my luggage for store for 2 hours because I will be leaving for he hotel the from there. When I came to take my bags, I requested the Manager to please help me with wifi so that I can order an Uber to take me to the airport. He refused and said I have already checked -out. I went out ruining on the streets looking for a wifi for just 1 min to order a cab. to no avail, I went to Pizza hut, McDonald but all the free wifi weren't working. I came back to the hotel 40 mins later fully sweat and exausted, I couldnt even speak. I was asking him how as i guess, he couldnt help me with a minuite wifi so I can catch my international flight. I gave his hand to collect my phone, I gave him and he put the password (which means he could have helped me since). Any way. I ordered for an uber but that is already too late. I missed my international flight, costing me over 400 USD plus sleeping in the airport for 24 hours.
This is not how to treat a customer, not how to treat any human being. I came back with a cab after missing the flight to see the manager, but unfortunately he wasn't around but I did voice mu concern to the other person on the front desk. This is extremely painful and unbelievable.