Went in for a simple oil change and tire rotation....

Went in for a simple oil change and tire rotation. Tech come out and tells me my lug nuts are frozen and they are having trouble removing the tires. Said that the lug nuts will probably break to get off and replacement is $7.50 per lug nut to replace. I have 5 lug nuts per tire for a total of 20 nuts at $7.50 each Told the I had never heard of frozen lug nuts in over 50 years of car ownership. I would not authorized the rotation. Took the car to NTB who removed an rotated the tires. NTB tech said the nuts were over tightened. Previous to this my car had been serviced only at Baystate Ford, so they over tightened the nuts. Don't think I will be going back.