"x x x.
A special civil action for certiorari
under Rule 65 is proper only when
there is no other plain, speedy, and
Lastly, a special civil action under Rule 65 of the Rules of Court is only available in cases when a tribunal, board or officer exercising judicial or quasi-judicial functions has acted without or in excess of its or his jurisdiction, or with grave abuse of discretion amounting to lack or excess of jurisdiction, and there is no appeal, or any plain, speedy, and adequate remedy in the ordinary course of law. It is not a mode of appeal, and cannot also be made as a substitute for appeal. It will not lie in cases where other remedies are available under the law.
In Land Bank of the Philippines v. Court of Appeals, the Court had the occasion to state:
The general rule is that a [certiorari] will not issue where the remedy of appeal is available to the aggrieved party. The remedies of appeal in the ordinary course of law and that of certiorari under Rule 65 of the Revised Rules of Court are mutually exclusive and not alternative or cumulative. Hence, the special civil action for certiorari under Rule 65 is not and cannot be a substitute for an appeal, where the latter remedy is available. xxx
x x x x
The proper recourse of the aggrieved party from a decision of the CA is a petition for review on certiorari under Rule 45 of the Revised Rules of Court. On the other hand, if the error subject of the recourse is one of jurisdiction, or the act complained of was perpetrated by a quasi-judicial officer or agency with grave abuse of discretion amounting to lack or excess of jurisdiction, the proper remedy available to the aggrieved party is a petition for certiorari under Rule 65 of the said Rules. [emphases supplied; citations omitted]
In sum, PTA had the remedy of appealing the RTC decision to the CA and, thereafter, to us. Under the circumstances, we find no adequate reason to justify the elevation of this case to the CA and then to us, under Rule 65 of the Rules of Court.
x x x."