Poor solar water heating installation

Nupower installed a new 200l geyser with solar water heating system in October 2016. All was working well until two days ago when the geyser tray collapsed, damaging the element heating connections as well as the drip tray outlet pipe connection. At the time of installation the geyser supports were not located on support beams and the tray was supporting the geyser until the tray ultimately collapsed, damaging the geyser element. Extremly poor workmanship and NO quality control on installation. I actually called them earlier this week to fix but due to their quality of work, decided to use an alternative contractor to do the repairwork.