Help Please - No Mileage Odometer & Trip Counter/Meter after repairs

[realness]

I just had the camshaft seal and the oil pan gasket replaced. Now for some reason the mileage odometer and trip counter/meter is not moving. The mileage odometer remains at the same mileage. It does not increase as I drive. Also the trip counter/meter remains at all zeros. It also does not increase as I drive. I know the mechanic had to disconnect the transmission and some other parts to get to the camshaft seal. The mileage odometer and trip counter/meter were both working fine before this repair. I drove the car from the mechanic to my house which is a couple of miles away from my house. So I know the mileage odometer and trip counter should have moved. I also know the battery was disconnected because I had to reset the time.

I plan on taking the car back to the mechanic tomorrow after work to have him check it out but I was wondering if someone can shed some light on what is causing this issue until then.

Thanks!