Pay back my money

On 24 October 2019 the Managing Director Elle Baker, agreed to do a full refund after my daughter were dissatisfied with the quality of the study material on Colour Therapy. On 15 November 2019 I send Ms Baker an email requesting when she intend to do the full refund of R3999-00. I received no feedback or even acknowledgement of my communication. On 19 November 2019 I called her personally and she indicated she was not in the office for a while and that I should please resend the email with my banking details, which I did, and she will attend to the matter the next day. On 22 November 2019 she phoned me indicating that my daughter wrote a bad review on their Facebook page regarding their bad service and that she will not pay the money back unless it is removed and she will institute legal action against my daughter for defamation of character. I emailed her indicating she should liaise with my daughter directly regarding the post and that the two issue should be treated separately since the agreement to do a full refund was agreed on first. She is currently not responding to any of my emails and I have not received the refund. It seems this is how they treat people who are not happy with their study material and service. I am currently seeking legal advice and will also report the institute to the Consumer Council.