StashFin — Stashfin loan app harassment

Website:

www.stashfin.com

I am harrassed continuously by a company called Stashfin. They are saying that I have taken a loan from them in 2021 and emailed me as they have registered the complaint also regarding the same.
These loan app recovery agency frequently call me and threatened me with name of legal action. They calmed they send money on my account. But when I used this app, my phone was hack by that app. The loan status was failed and then my phone was switch off. They send money without any further discussion about it and without any further noticed. I request you to kindly look at this matter and solve this asap. I tried to email them and contacting them but they never said about it.