6 debit orders for one policy

I took a policy with Old Mutual,with the premiun of 1434,of which i have cover my immediate family members and my extended family members

The policy was incepted on the January my first debit order went on the 25th where i not pleased cause i had 6 debit orders for one policy meaning that each and every member covered was debited as per policy,i phoned in and spoke to the manager named Kenneth's Chindikano to please rectify the debit order i want it run as 1434 and he said he was gonna sort it out, a month later the very sane thing happens i called again sooke to him once more he promise to call but never did,i have now occurred bank charges because of this debit order running one by one.