I got a confirmation of my ticket raised approx 18 hours after it was raised.

With all due respect to you Lesan you need to stop comparing this issue to other companies which can quickly adapt and cater for home working. You are seeking to remove a security feature from your account and that for obvious reasons is not something that is done lightly by SE. Providing that you raised the correct ticket and provided the correct secret question and answer combination then it will get done - you just need to be patient.