My builder promised a flat 2 years ago, but it's still not ready! They seem to have cheated me. Our agreement has an arbitration clause, so what should I do? Should I go through arbitration or file a case in consumer court?

No, registering your NGO as a trust in India does not automatically grant you tax exemption. You need to apply for and obtain separate tax exemption under Section 12A of the Income Tax Act. Regarding your logo, trademark registration is separate from trust registration and provides legal protection for your logo.