Bad Admin and customer service

I have cancelled a contract in May this year my focussed investment plan and cancellation was confirmed by old mutual on the 17th of September and my lump sum of my investment paid out to my bank account.

However to date i am still getting deduction for this cancelled contract and to make it worse i have to wait 30 days every time to get refunded for this ******* deductions. i have been complaining to old mutual ever since and they have been promising to fix this but no luck.