Threatening with garnish

Hello Peter, I received a phone call from someone who said he is sent by my creditors which is capitec, standard bank and old mutual to demand their money from me, He offered me a lower payment option which he threatened me with the garnish at work, after i asked him to call me later i received a massage which reads like this"This notification serves to confirm that I My name Surname, with id number gave consent to Alpha Debt Management 2021-01-12 to request/optain a compuscan credit report on my behalf with the objective to perform an affordability assessment relating to my current debt exposure. "