TERRIBLE customer service. Throwing insults over the phone.

PPS keep on contacting me at my workplace, where I have repeatedly told them that I am not interested at this time. After my last refusal, and after refusing to tell me where they got my contact details, they phoned again a few weeks later, where they asked our receptionist to speak to me and that it was a "courtesy call". I told my receptionist that I am not interested, where the lady over the phone then said to our receptionist "Wow, you're an idiot" - and then hung up. This is possibly the WORST customer experience I have ever seen. I might have considered them in the future, but I will never support a company that treat people like this.