Gujarat Gas — Transfer Name from Builder to owner

Address: Bharuch

Went to Bharuch Gujrat Gas office for name change, where desk officer asked to submit entire property registration papers which is approximately 200 plus pages. I want to understand why property owner electric bill not enough for owners name change. Even electric bill is generated by government board... it’s very inconvenient for customers to xerox each and every pages of registration and disturbing the property documents. Why such harassment given to consumers! Need to know the reason behind this process?????