Disappointing TFG experience

I attempted to change my physical address on my TFG account and was told i would need to answer 5 computer generated questions. One of the questions being the issue date of my green ID book which i have not been using for the past 2 years as i was issued with an ID card. As a result of me not being able to provide the date of issue of the ID book i was told that i failed the authentication process. My account is now blocked and i will need to go in store with my ID and Proof of residence to unblock my account? Absolutely pathetic! Surely updating an address cannot be this complicated!