If you *bought* (but financed - i.e., took out a loan to buy) the vehicle, the "interest" isn't included in the "out the door" price.
Above, "bolt2018" listed her/his Out of the door cost as $41,744 with NO INTEREST listed. If you add in your "$3,811 Interest", the total would have been $45,555.
Currently, at Fremont Chevrolet, they are offering about $5000 off MSRP for many 2018 Bolts.
In the future, when you are thinking about buying a new car, you might want to ask for price quotes via email from several dealerships.
But again, you didn't get hosed - you may have paid a bit more than you could have snuck away with, but if you like the car ...