Bad customer service Dischem health

I cancelled my Dischem Health policy by phone before the first payment date, so the policy never started and no cover was active. Despite cancellation. Dischem Health: 1. Debited my bank account twice this month for R549.00 each=R1098.00 in total. 2. Placed a restiction on my debit order mandate so my bank cannot reverse the incorrect debits. 3. Cancelled the debit order after I complained, but failed to remove the restriction. My bank confirmed the restriction is still active. This is unacceptable. I m now unable to recover funds that were taken in error because of Dischems restriction.