2000 Honda Accord not trusting the service department

My car's dash and tail running lights did not come on one morning when i turned on the lights to go to work. but my brake lights and head lights worked. i figured it was just a blown fuse so i schedualed a car appointment and after waiting for three hours they finally told me it was the connectors not the fuse. then when they gave me the car back i was driving away when i noticed my check engine light and srs light were on. i called them immediatly and they said that they didn't do that. in order to get it fixed i have have to pay for each light they siad. what is really the problem why are those lights all the sudden on and why was it the connectors and not the fuse for the first problem? thank you any input would be much apppericated!