Retention Department Always BUSY, High Number Of Calls!

I have cancelled my policy on the 12 January 2018, that was the day I sold my car... I received an SMS on the 26 January 2018 stating that my policy is still active and i will be debited on the 1 February 2018... this was even after the retention department called me on the 12 - 15 January 2018 confirming my cancellation... Called on Friday 26 January to find out what going on... and Retention Department is Busy High number of calls, called Monday 29 January @ 8:05am, Guess what... Retention Department Busy High number of calls... It. makes me wonder that your service must be really going down if your retention department is always busy trying to keep customers...? All I want is my existing policy cancelled. I mean I dont even have the car anymore...???? Come on MiWay you can do better than this!