Money lost from mobile bank

Lost 30000g today probably due to a bug. Was in Ironforge buying heirloom upgades an a low lvl alt.
Withdrew 20000k from the mobile Guild bank and got nothing. I thought I exceeded the limit for that alt and tried again with 10000k. Again nothing. When I looked at the bank log, the money was listed as withdrawn.
It’s not a very big thing, but now I’m afraid to withdraw money again.

Edit: I now see a blue response in another thread that the money that shows in the logs might not be actually lost.