Done with car installments, need to cancel mortgage at Registry_of_Deeds-Quezon City.

Went to City Hall, Information desk directed me to go to Land Registration Authorty located beside NSO at East Avenue.
Went there but I was told that Registry of Deeds for Vehicle is in LTO.
Went to LTO, they said it is in City Hall.

I'm sure somebody here already went through this & very familiar with procedures to obtain a new Vehicle Certificate of Registration.

Somebody please help me, where exactly is this REGISTRY OF DEEDS yung para sa sasakyan hindi para sa lupa.

Salamat po ng marami.