This will be the final time getting service done a...

This will be the final time getting service done at this place. Everytime I bring my car to do an oil change and tire rotation it takes an unusual long time to do for some reason. Sometimes they say it will be 45min and it turns into 1hr and 30mins. This time I was here waiting for 3 and a half hours for the same routine maintenance with the same excuse of there was a bottle neck or we ran into some problems. The service writer said it may take a little longer than usual but down played the ridiculous amount of time it was actually going to take. I assume as a service writer you should know how long a service will be and how busy the techs are.