Having the same issue at the moment with some small transactions not appearing - don't think support is open on the weekend though.
No their support only runs from Mon - Friday 9am - 5pm, so it makes it a little hard to contact them when needed.
I am currently locked out of my account after some 2fa issue from their end so i think it may be time for me to look for a new exchange where to buy my coins in future.
It should show up within a few hours but this is not acceptable for a bitcoin company, all transactions should show up on the blockchain instantly unless it is an unusually large sum that they have to access from their cold storage.
Used to be a great company and i hope it stays that way but more and more problems are arising so it could be time for a change.