June 15th, due to technical difficulties, my #3938 flight was cancelled from COS to Vegas to Reno (final destination). They rebooked it 6hours later to Denver. Denver Hub was Hell; finally got on plane and sat on tarmac for 2 hours while they waited for a pilot to come in from Baltimore which that plane was late. Did not get into Reno until 1:30 am. I was so exhausted, I booked a room in Reno so I would not have to drive 2 hours to Tahoe. Called Southwest customer service 6-17-2021, who said there is no compensation. No food vouchers, no hotel coverage, nothing. I can show all my receipts. As an A List customer who has been loyal for years to Southwest I am so angry. Way to lose a frequent flyer.