Why is Barclays so slow over lost funds?

I tried to transfer £8,500 to my ailing mother in Ghana, but the money has vanishedI transferred £8,500 from my Barclays account to my mother in Ghana two weeks ago and the money has vanished. I’ve called Barclays three times and it’s told me to call back after three working days. This is giving me sleepless nights as the money is all I have. My mother is very ill and needs the funds for her hospital bills. FM, EdinburghAnother sadly familiar story. Swift payments certain