Davey DynaDrive DD90-11

Most dysfunctional product I purchased in 10 years – Bought a brand new pump (Davey DynaDrive DD90-11). The first day out of the box it didn’t work. The plumber took it back to the Davey distributer who said there was a manufacturer fault and the power board was not connected. They fiddled with it and got it to work. The pump was installed but the next issue is that it was constantly on. Problem we paid for latest technology that is a pump with a pressure system that should turn off once water is not needed. This was not happening. The Davey authorised service agent said they would ask for a new circuit board to fix that problem. Heard nothing for 4 weeks. Chased them and the agent came out relaced parts, 2h hours later it stopped working. No pressure. The agent said he tried to bench test the pump had issues was trying to get an answer form Davey but could not get support. Eight weeks after purchase still not working. Rang and emailed Davey directly 2, 4 and 6 weeks after the purchase I couldn’t get a response either.