Shocking poor service from a premium brand

My maintenance plan ended January 2023 (5 years). In June I found liquid on my garage floor underneath my car. Lexus tells me it is an oil leak. On 3 July my car is with Lexus for 3 days and it costs me R9000 3 days. It is still leaking. On 24 July it goes in for a minor service. Just before 16:00 told I won’t get my car?! What now, I run a business and have appointments for the rest of the week. Why was this leak not fixed in 3 days at R9000? Why do I only get told at 15:46 that I won’t get my car back? At this time it still has not been serviced. I have been without a car for 2 days and this morning they told me they need my car for another 2 - 3 days but it is impossible as I have meetings and site visits and work to attend to and no alternative means of transport. I didn't realise if you drive a Lexus you need another car as back-up.