Just Property Centurion Are A Bunch Of ****mers !

I have paid a R1000 lease fee for a lease that I have informed the agency at Just Property In Centurion that I will no longer be renewing the lease as I am moving out of the property and serving notice, Just Property is refusing to give me money back and they say that it is due to administration costs of which I don't understand as I have not signed the lease nor have I returned the lease back to them signed and I ha e emailed them to inform them that I am moving out of the property. Today they are charging me R50 cash deposit for paying my last rent ofwhich I transfer their rent money from my banking app into their account and when I call them they do not know what I am referring to where as I am receiving emails about a payment of R50 for a cash deposit. I am sick and tired of kust property as they are a bunch of ****mers !