difficult to cancel policy , annoying call centre agent

Terrible service, I called to cancel my policy and was transferred to a sales agent who immediately started to tell me why I shouldn't! I repeatedly insisted that I did not want a long sales pitch, I just wanted to cancel. He completely ignored me and kept to his script to persuade me to change my mind. He repeatedly talked over me as I tried politely to tell him I was busy and simply wanted to cancel. It was extremely annoying and I eventually had to get very firm with him, he than got angry with me...and still started to argue with me some more!!!!