"Even if I could borrow the amount concerned, the rate would be so high compared to the existing, it would be a pointless exercise. "
I believe you have your answer now.
"Re the additional security, the Bank do not know where it is, what the condition of same is and they never inspected it, despite them requesting to do same, but they never showed up. It even can't be seen on Google Maps.
I always used to work on the principle that if the Bank shouted Jump, I'd say how high ? Times have changed and those days are gone. I, like many others have been blamed for their mistakes."
None of this is relevant.
mf