Sec. 13. At any time before the final judgment in the suit, any creditor of the defendant, upon filing an affidavit and written undertaking, as required of an attaching creditor, may do the following:
(1) Become a party to the action, file a complaint, and prove the claim or demand against the defendant.
(2) Have any person summoned as garnishee or held to bail who has not before been summoned or held to bail.
(3) Propound interrogatories to the garnishee and enforce answers to the interrogatories in like manner, as the creditor who is plaintiff.