Testaro not arriving for mobile testing

We requested a mobile service for testing for 6 staff members who needed a Covid test for travel. We arranged for testing between 9 and 12 noon on the friday before travel to ensure that everyone is at the office. After again confirming several times during the morning that the nurse will arrive in time and testaro confirming, they did not arrive. We had other commitments and needed to leave the office. We also then had to made urgent arrangements to get everyone tested to fullfill the travel requiremens, since they did not arrive as arranged. We paid upfront and requested a refund but was only refunded R1500 of R5750. I send several emails to request the full refund with no response. If you need tests done on site, rather go to the testing labs directly than relying on this company to get it done for an extra fee on site. And if you paid upfront and they dont arrive, you will struggle to get the funds returned. Really unacceptable service.