Dealers & Drive Thrus

Because they always f ya in the drive thru, an the same goes for the dealerships
My 2010 had never been to a dealership.have always done my own work.the 1time I go.in a time crunch for a long trip.I have them do the transmission flush .now a month later, the line they pulled to flush the trans comes loose an all my fluid goes by/by
First sign .road was really wet from rain covered with leaves .I take off from stop sign (rpms were way up there) an it feels/sounds like I'm spinning rear tires really bad. but wait I'm not moving much
Ended up making about 500 yards more to safe area
So if I was spinning the tranny clutches on low fluid .what damage has been done.?
Towed to dealer in the state I'm in now.they were only able to do a brief look at it before closing.an said the oil remaining showed no metel shavings.so there crossing fingers it will only be a refill
So long story short dealers F ya like the drive thru