unpaid refund

I have been greatly inconvenienced by Sanlam sky for sometime but now it is getting worse. I have both an investment and funeral cover for my family with Sanlam. On the 29th of October 2022 Sanlam took premiums from my bank account and also from salary for the same premium meaning I paid 2 premiums for one policy. On Friday the 4th of November 2022 I submitted the refund forms to *** and CC *** up to date I have not received any correspondence from this insurance company. When I called on the 7th of November 2022 the lady by the name of Nondumiso said I will get the notification later on the day. I also fail to understand why sanlam even debited my account on the 29th day of the month whereas I instructed them to debit on the last day of the month. May someone assist me to get my R1470.44 .