Poor workmanship and aftersale service

DO NOT BUY....I bought a property from Thirty-first Investment Pty Ltd T/A Cadence and Tyto properties in their development in Lonehill (Sierra Estate). The sales process with the sales agent (Hendrick) was okay but the final product was rather very disappointing. Most of the walls of the house were/are skew, even window reveals are out of square. I reported these snags/issues to Marc Duckitt who is incharge of the development and also works at Cadence as a development manager and basically the process has been a nightmare, they just don't care to say the least and will even force you to take occupation of a defective product through their lawyers (be careful not to sign anything with them before consulting your own lawyer). They tried fixing the skew walls by adding more plaster but still didn't do them properly because some walls started cracking and the player was already detaching (had a hollow sound), which they had to redo twice at my instruction again (After they had told me that the walls were fixed). They don't even provide you with timelines on when they will be attending and finish resolving the issues and expect you to be the one running after them to fix. Literally I am now sitting with a R3m house that is out of square and they are telling me that some of the skew walls are within the acceptable error threshold.