Unhappy customer

In September I went into multichoice to change my debit order date from the 25th to the 01st of every month. I even paid additional cost to cover to the days between the debit order date.

Multichoice has now tried twice to debit my account on the 25th resulting in additional penalties from the bank due to insufficient funds. When I call into the call centre the "robot" tells me that i must change it again and pay additional to have my debit order changed!

I want some competent and willing to assist me rather than someone telling me I must pay extra to contact me urgently