I have a Honda Accord 2002 4cyl automatic

The other day my 1st and 2nd gear didn’t wanna engage so I had to speed up and reach 3rd in order to move. I also have a check engine light for my torque converter.

Now the day I took it in the car started working fine which is okay sure, but then the transmission shop is just telling it’s working fine and the check engine light for the transmission can turn on for whatever reason, just drive it.

All he does is drive it and see how it drives and not even looking at it.

Should I get other opinions from other shops?

I just feel like this guy doesn’t want to deal with it or give his word about the 1 year warranty.