Carvana complaint: 2016 Hyundai Sonata

I had one good experience with Carvana but I just bought this hybrid car Hyundai and wow! The rep promised me they would repair the damaged windshield but the request never got in their system. I gave carvana the benefit of the doubt hey maybe they just made a mistake. But no, the Carvana rep who worked on my car just sold it to me in whatever condition it was in. The battery had issues and $700 dollars later my car isn’t dying constantly. Here is the unforgivable: he DID NOT change the engine oil and lied to me and told me it had been freshly changed. Thank god my license is suspended right now and I didn’t drive it at all. A mechanic discovered the mistake later and fixed my oil, several months later! If I had driven my car unaware of this it could have destroyed my entire engine! Carvana seems like a scam to me now and I will not be buying a car with a delivery service going forward, just wow wow wow!!