For the past six months or so I've been receiving marketing calls from a company called GFC. They phone to offer loans/IVAs etc. I've received about 50 calls so far, the first 30 or so I said to them I'm not interested, don't phone back. The 10 after that I started getting a bit angry and spoke to several "managers" who said they'd take my number off the system.
So after those 10 I told them that if they ever phone me again I'm just going to swear at their staff down the phone. So the next 10 have been and gone with me getting in about 30 seconds of serious abuse before they hang up. Some calls they let me go on for ages then put me onto a manager who again says he'll take my number off the list. I again warn them that if they choose to ring me they'll just get abuse. Got another call this morning, only about 15 seconds of abuse this time. Have been registered with the telephone preference service for a few years, just tried to re-register and it says I'm already registered.
What else can I do to stop these idiots phoning me?