maxine29
I have seen a few cases in the past where the CHAPS request was not completed correctly. The money is deducted from account but due to error with the request, the money is not transfered. If this happens my understanding is that it appears on an error report and will then have to be resolved by the sender. The Halifax should have an accounts report that will show this error.Once they find it on this report, they then have to arrange to resend the CHAPS.
This is the only conclusion I can think of from your post. If all the information on the request was accurate, the money would have been transfered. I doubt you will be able to sort this out on a Saturday as I suspect the team dealing with CHAPS will not be available until Monday.
huckster