me and a colleague were playing betting and wanted to know if this behavior of a friend of his who helped him in the match would cancel the match or still go on

I was leaving, and a friend of my opponent gave him a tip: "Aren't you going to use your clefable?" giving him a tip to put her on the field and after that speech in a few turns, my opponent put her on the field, this influenced our battle and made me lose, would this battle on a ladder tour be redone? canceled? or accept? thanks for your time ^-