One on One Real Estate Centurion Outstanding payment

We received a telephonic request on Sunday 28 January 2019 to provide a domestic cleaning service on a rental property to Natasha from One on One Real Estate Centurion, 267 Panorama Road, The Reeds. The appointment was for Monday 29 January 2019 at 8h00. We cleaned the property in question but has received no payment for the service 6 months later. She acknowledges the payment is still outstanding, but does not pay!