Carvana complaint: Worst experience how are they in business

Needing to buy a car didn’t want to go to a dealership.We decided to try carvana Started the process Sunday submitted the documents they ask for. Such as proof of employment ID tax docs and banking pages. Got a email said congratulations your purchase is being prepared.
Monday received a email asking for more documents that I already sent and they needed them in by a certain time. I work 14 hours day submitted the documents they requested missed the deadline by a minute. Called to talk to someone they said yeah you still need more documents.
They sent me a new email that I needed to send 6 more documents for punishment not making a deadline.
Sent them over. Signed everything Monday night email saying congratulations on your purchase
Then Tuesday received a new email asking for more documentation sent them then called they said that it isn’t finished and more documents are needed they already have gotten everything sent over 4 times.
6 bank statements
3 w2s
6 different bills
Driver license
Worst system don’t buy a car it’s a hassle