Persisitant auto and general

I've completed a quote with auto and general a month back and declined as it was not competitive and that should have been the end of it. However they keep calling over and over again even though I did not give consent to do so. I recieved a call today from a rude guy name Richard in the multiple plan department. I don't know who he thinks he is speaking to but I am neither a client nor someone who has given you concent to call me. Secondly I would never be interested in signing if that's the kind of agent I would be speaking to. Stop calling me, next time I will report this.