My question involves a security deposit in the State of: Missouri.

We used to lease an office space and the lease expired in March 2009. We vacated the office and returned the keys at the end of the lease. Due to a clerical error we mistakenly paid rent for April and May. When I contacted the landlord and requested a refund of the overpayment, as well as the security deposit, he said that we left a copy machine behind and therefore did not vacate the unit and were still liable for the rent until the copier was removed. Shouldn't the landlord just dispose of the copier and charge us a reasonable fee from the deposit and refund the balance?

Thanks!