What they don't tell you about snag list fixes after Ghaziabad possession

Been dealing with this for six months now and it's driving me nuts. I work in real estate, so I thought I knew all the tricks, but buying for myself at MNG Smart Villa in Ghaziabad has been an eye-opener. We got possession, and the snag list is just... ignored. Seriously, there's seepage in the master bath and half the electrical fittings are dodgy. We're paying decent maintenance charges, but getting actual service for these basic construction quality issues feels impossible. Does anyone else face this? What did you do to get builders to actually fix stuff after possession? This definitely impacts future resale value and tenant attraction for sure.