Poly outdoor blinds

We've asked around for reliable companies that can install outdoor patio blinds / canvassing We were referred to this company by a friend The first installation was done during April of this year All good no issues Workmanship excellent But then we made arrangements for the second installation to be done 5 August (note we booked this date well in advance) We've also paid the total outstanding amount so we don't owe anything Now a week later the installation still has not been done and the manager keep making excuses that the installation team is on slow go and not pitching for work When I phoned today and spoke to the manager Sydney he said in fact the installation team has arrived...but now apparently they are first having a meeting... If you know you're work has fallen behind why would you then schedule a meeting It's now nearly 12 pm and I've still not heard from the company I did tell them if the installation is not done today then I want a full refund (I have this on whatsapp to the office and my phone also records calls)