I moved out of the storage facility in Alexandria, VA on February *, **** after notifyi...

I moved out of the storage facility in Alexandria, VA on February *, **** after notifying them that I would be doing so. When I arrived there was no one in the office. I went to my unit and the roof had collapsed onto my belongings. I walked back to the office before the movers removed my items and there was still no one there. I took my things out, left a voice mail message and went on about moving into my new residence. I received a bill for a month's storage. I attempted to call the office of the location I had done business with and got their voice mail. I left a message and never received a return call. I called the corporate office, explained my situation and was assured that someone would contact me and that all would be taken care of. Now, I have a letter from a cheesy collection agency (Allied Interstate) on behalf of Public Storage. This is ridiculous. What can I do about this short of getting an attorney? Why is it that this particular location has such horrible customer service and now trying to rip me off? I will take this as far as I have to because what is happening is thievery.