Bad Customer Care from Sanlam

I was a client with Sanlam for 35 years. Recently i cancelled my policy with them. Two months premiums was to be refunded. ( R 1840.p/m ) .The first R1840. Was refunded to me by Sanlam. The second ( R1840. ) I had to sign a letter that i won't reverse the debit order. Every time i enquired about my repayment they had a different exquise. After weeks of no refund i notified Sanlam on the 13/3/20 that i am withdrawing my letter. On the 14/3/20 i reversed the debit order.