Public Storage

I purchased not (1), but (2) storage w/ PS, in good faith. I was charged full price for the 2nd storage as well as for the lock, which I believe I was an overcharge; especially compared to competitors! I've always used PS. I placed a review about that & never heard back from anyone. I filed a complaint on being harassed by the facility, I never heard back from anyone. Today, I stopped by the location to remove the 2 auto debits & to pay for the remaining days that I'll actually need the (2) storage, which is only up until 4/12/21. I was told not only that I cannot make such an attempt, but also that I'll be charged for the entire month! How can a company charge a customer for something they don't use? Since when is it customary to charge a renter a full month & not prorate it? Especially when the entire month is not used? I continue dealing w/ erroneous charges & improper customer service. I've made 2 calls today & I'm still waiting for a supervisor to call me! Never again.