Shocking ignoring of client's numerous requests

My father is 91 years old. He appointed me to look after his financial affairs on his behalf. His books are done by an accountant in Kimberley. There were deductions from his account for the past few years for a"Pastel" programme, which he didnt even want from the start. I enquired the accountant about it and she showed me that she requested Sageone to stop the deductions and refund my father - he didn't want the program - as he cant even work a computer! I got the "Sageone" accounts department's e-mail address from the bookkeeper and have since then sent them 15 mails requesting them to stop and refund my father for the Patel deductions. I am shocked to say that in the window-period of the three weeks which I have mailed them nearly every day, they didn't even had the decency to reply to one of those mails. I think it is shocking! I would like a urgent response and action from Sageone