Possible breach of POPI Acr

I received a call from dot sure saying they have been assigned to me as a warranty specialist for a vehicle I have not had for many years furthermore apparently on behalf of mondo? To my knowledge I have never been I sure with either companies intact, when I questioned the person on the call and asked where they got my info from they said they system I then asked if they are aware of the popi act she confirmed yes and I asked again where the info came from and again she said the system and dropped the call, I believe this is a breach of the POPI Act and I'm happy to take this to the ombudsman should you not be able to prove where I concented you may use my personal details