The Patronato is the entity that collect all local taxes. I am assuming that as a property owner, you are referring to the IBI tax. For this year, this is payable from July 1, 2019 through September 13, 2019. If you have set up a DD, the Patronato will send the charge to your bank some time between those two dates.
I suggest you contact them to find out when they are likely to do so this year. The address in Manilva is: Doctor Alvarez Leiva, 6. The telephone number is 951 957 275, fax 951 957 431.