Toyota Dealer Ripped me off

My local dealer Kolosso Toyota in Appleton WI talked me into having the
manual transmission oil changed in my 01 Celica GTS as part of the 60,000
mile scheduled service. They said the 60,000 mile service requires the
changing of ALL fluids in the car. They charged me $62.95 to change the
manual transmission oil.

When I got home, I checked the manuals. The manuals do talk about the need
to change automatic transmission fluid at certain intervals, but there is NO
mention of any schedule to change the manual transmission oil EVER unless
"you drive primarily while towing a trailer or using a camper or car-top
carrier. If you drive only occasionally under these conditions, it is not
necessary to perform the additional services."

Based on that information, I think they ripped me off by performing
maintenance that is not required on a Celica. How many Celicas are used
"primarily while towing a trailer...."? I'm tempted to file a complaint
with the Better Business Bureau.