SAN FRANCISCO, Dec. 29, 2011 /PRNewswire/ — A California resident who was improperly assessed hundreds of dollars of overdraft fees by Umpqua Bank filed a class action lawsuit today against the bank. The class action lawsuit alleges that the plaintiff, and other Umpqua customers in Oregon, California, Washington, and Nevada, were charged overdraft fees because of Umpqua’s unfair and deceptive overdraft fee practices. The lawsuit alleges that these practices are unconscionable and violate Umpqua’s contracts with its customers. Umpqua, which touts its customer-friendly policies and claims to be the “World’s Best Bank,” has a major presence in the Pacific Northwest…