i am doing fall clean-up weekly with it understood that i would be coming weekly until the leaves are done falling. i went there two weeks in a row for $60 a time and sent the bill. for the next two weeks it snows and rains, freezing the leaves to the ground. i finally get to finish this job for the season with 3 weeks worth of leaves- now am i entitled to charge $180 for the last cleanup. has anyone been in this situation before?