House cracks and pops

I would share bad expirience currently I'm have with the property developer called valumax my house was built with a cheap material when it was pickup they promised to fix it if they can't fix it house will be rebuild the pops in my house coming out to the places where they fixed and the are new pops the house looks like check board when I ask them to Atleast remove plastering put new plaster they want they dont respond to me and I'm moving out the house I need to advertise the house I can't because of the mess in structure. if you want to buy house with them I'll think again and I'm not the only one who is expiriencing this with them