When you bought a new construction property, it is normal that it takes so long to receive the first IBI tax bill. Normally they send the current year and the last 3 years in another bill. So that, you have to make the payment directly in your bank and at the same time make the direct debit for next years.
For the bills you have to phone to: 952 89 00 65 and ask for Recaudación, they could send you by email the outstanding bill. Another phone to call is: 952029000.
If you do not pay this tax, they could seize any account you have or even the property.
Calle Ancha 30, 2º