Highway 14 Storage

I had a unit for almost one year with Highway 14 Self Storage and have mixed reviews. Honestly I was impressed with the cleanliness and security offered, however their office management needs improvement. The owner moves around a lot, as she owns storage units in multiple towns around Southern Minnesota and seems to have a hard time keeping track of her leases.
After my first three months I downsized from a 10×20 to a 5×10, during this transition my key was «misplaced» so I was charged for both units and my deposit wasn’t refunded. We had a conversation and my deposit and monthly fee were refunded due to key being located. Forward eight months, I give 30 day notice my unit is no longer needed — she informs me she won’t prorate so I keep the unit till the end of the month. My key was mailed to her one week prior to the end of the month and my notice was given but she charged me anyway and saying my key is missing. I think this is a common theme and she keeps misplacing my key. So frustrated and out $ 80.00, although I am trying to get $ 40 back and have her keep the deposit I am left with a sour taste in my mouth. I’d recommend renting somewhere else or make sure you directly hand in your key to save yourself the trouble.