No response from RETENTIONS department after two weeks.

I've been trying to close my account for over two weeks now and I even went to the Telkom store in Kempton Park Festival Mall only to fill out the same cancellation form I sent on the same day to the RETENTIONS department to this very day, no one has bothered to give me a settlement amount because they planning to bill me INCORRECTLY again come end December when they can't reverse their debit order instruction on time.