Bank Logic

The bank called me the other day. They were not complaining but it appears I had made life a little difficult for them.

I use the bank to make transfers and there is a small charge for this. Up to X Euro it is €4 and from X+1 Euro it is €6. Because I could not remember what the rates were, last month I had sent X+5 Euro to cover the transfer costs.

Now let's see it from the bank's angle.

1. I sent X+5 Euro. 
   
2. If they charge me €4 then they send on X+1 Euro.
   
3. But X+1 Euro is a €6 charge.
   
4. So if they charge me €6 they send on X-1 Euro.
   
5. But X-1 Euro is a €4 charge.
   
6. See 2.

It appears I gave their computer a headache.

The bank solved the problem in a very acceptable way. They manually intervened and clicked the "free transfer" option. It appeared odd at the time because I had noticed they did not charge me and I didn't know why. Now I do, but somehow I don't think it will work twice.

Next time I will send them X+4; although I don't think it is all my fault. I just wanted to be sure to cover the costs. So now I have made a note in several places of the charges.

The other part of the problem is their charging strategy; and some convoluted logic....