Poor service

I have canceled an annuity with Sanlam and they are still deducting the 4th month from my salary.Heaven knows why it takes so long to cancel a debit order.Last month i requested a 48 hour payout and the premium was paid back within that time frame. This month i requested another 48 hour payout from a agent called Mr Matthee who said i have to wait and there is nothing he could do. Iam seriously considering taking my other policies to another insurance company.