I was on a month to month verbal contract. My landlord notified me that I needed to give 30 days notice of moving out. In July I told my landlord, verbally, I planned on moving out sometime in Sept. I told him again the 1st week in Aug. On Aug 14th I texted him and told him I was moving out Sept 13. On Aug 19th he told me he would prorate Aug rent and take it out of my 1000.00 security deposit. 3 days before I moved out he told me that he didn't find a renter to move in so I had to pay all of Sept's rent. He gave me 150 when I moved out. My rent was 850, 1000-850=150. He did not return the amount with interest nor did he start looking for renters until mid Aug. I thought MD law stated 30 days until end of tenancy or 30 days prior to the end of the lease period for me was Sept 31.