Difficulty cancelling a funeral policy.

I went to metropolitan at centurion mall which is inside African bank to cancel a funeral policy of my step mother in January 2018 and was helped by a lady working der who I don’t remember her name and she took my I.d did whatever it is she was doin on computer and she told me it’s cancelled.come month end it’s still showing on my payslip,so I thot maybe they are still busy with it.and still de next month de still deducted and I went again to metropolitan in March of which the lady never apologized or anything she jst told me she cancelled it again. So I need my refund from January to date and I need the policy to be cancelled with immediate effect.