(1) A person interpleads by filing an application for relief by way of interpleader.
(2) The application must be filed —
(a) in the court office out of which the writ of execution was issued;
(b) if a writ of execution has not been issued but there are proceedings in respect of the money, goods or chattels — in the court office in which such proceedings are being conducted; or
(c) if there are no such proceedings — in any court office.
(3) An application other than by the sheriff must be supported by evidence on affidavit that the applicant —
(a) claims no interest in the subject matter in dispute other than for charges or costs;
(b) does not collude with any of the claimants to that subject-matter; and
(c) is willing to pay or transfer that subject-matter into court or dispose of it as the court directs.