The shop that serviced the tranny should have the specs on how much fluid to put in. If they don't know, they shuoldn't be selling their services because they dont know what they are doing, I'd inform them that you need to take your now-not-working car in to get the tranny re-serviced somewhere else cause they don't know what they are doing and you can't risk damaging your car with unknown fluid levels. (get your money back!) If they didn't know how much fluid to add, did they know what type to use? I would get it re-serviced or re-do it myself so you can get it done right.
