No response about defects and damages

I bought this house August 2022 it's been having issues since and i have made numerous emails to Calgro to have them sorted out, the geyser was not working then they sent a plumber to come fix which he did after 5 attempts and during those times my ceiling got water damaged and my son's bedroom cupboard, the passage light got affected by the water and i sent an email with images no response. The plumber whatever he did with the wiring has resulted in 2 bedroom's and 1 bathroom not having lights working, the outside wall is failing off by the timber that's holding the roof up i sent images no response from anyone. I would never advise anyone to buy a property from them because once funds are released they don't care about you