Cancellation of annual increase

In February I wrote the below email requesting assistance. On the 10th of February I received an SMS indicating that Angelie Mohawule has been allocated and enquiry and I will get a call. To my surprise no one has called me, and for the month of March R403.34 is going to be deducted from my payslip as I have already received my payslip. Am I going to get the refunds for all this debits? Because I will appreciate if the difference from last year can be refunded as I did indicate that I do not want an annual increase.