hartford auto insurance Hartford cancelled my insurance 6 months after I paid the entire years premium and never notified me df, Arizona

I insured one of my vehicles with Hartford last year. Right from the start I had issues with them... first of all premiums were not delivered to me on several occasions causing a lot of work to try to straighten things out so they would not cancel me. They tried to cancel me one time due to non payment when they did indeed have my payment and this year I paid the entire years premium by the end of March to try to avoid any future premium problems with them and on 10-30-10 I received a check from them for $240.00 and all that it said was that it was a refund due to my insurance being cancelled on 10-04-10 which means that I was driving uninsured for 3 weeks. No letter or phone call from them explaining what their latest issue was. They simply cancelled me and sent me a partial refund 3 weeks later.