How do I get a statement showing payments from Greendot Corp.?

My husband and I have been paying every month for a storage unit for 3 years. The manager has told me we haven't made any payments and won't tell me if our stuff is still there or not until we pay him 3000.00. The problem is that we can't get green dot to send a statement proving our payments for the past 3 years because they don't have Humans to speak with and when we leave a message about how dire the situation is, they never call us back. Without that paperwork, we have no defense against this jerk of a storage manager and we'll lose all of our childrens memories and everything. There HAS to be a number where a real human answers. If not I swear I am making a Huge list of people to sue starting with green dot!