Excess billing on subscription

I notice that my billing is being mimic over the last 3 months, and there is an extra charge copied over the months. Billing department is not helping out to reverse or refund me this odd charge on my billing or invoice incurred. I'm a loyal customer for a decade now and this type of excess charging on my account is totally unacceptable. Consultant: Thato Mazibuko. Team Leader: Charmaine Ma***o.