@Graeme *********
-
The charge is clearly shown in your post.
$1000.00 sent to Wise
-$7.47 fee that wise take
$992.53 is the amount that Wise convert to THB
If wise converted $1,000 @ 23.1689 you'd receive THB 23,168.9
But due to the fee you only receive THB 22,995.83
I don't know how else to show you maybe reach out to Wise and ask them if they charge a fee as it's clear you don't believe anyone else.