Duhai mein builder ki manmani: Kya karein?

Duhai keeps coming up every time I shortlist something. I'm upgrading from my 2BHK and already have a home loan. But yaar, ek builder ne toh mera dimag kharab kar diya hai. My current project's possession is 2 saal late, and ab hidden charges maang rahe hain OC ke liye. Pure brochure mein kuch mention nahi tha. Is this normal practice for builders like Gaurs or ATS in Ghaziabad? Should I even trust under-construction projects anymore?