swift fee by Tanchart?

[jacky54]

Made the mistake of clicking deduct further fees from the sending bank instead of the receiving bank. Now Tanachart have taken 26.86 UK pounds out of my nationwide account as their charge on less than 3k pounds transfer. NW fee was the normal 20 pounds. They did this once before years ago in the same circumstance but only charged the same as NW. Anyone know what the fee should be? Anyway I am sick to death of them and will be closing the account on the next visit and put it in the yellow bank.