Update:

I have just had a response from BTCe, giving me the date and amount of my deposit.

I haven't seen anything at all that says 'hold' on my account, but on the off chance, I sent them a copy (via support ticket) of a bank statement. Got a response 20 minutes later.

Nothing credited to my account yet, but I'm a lot more hopeful now! Try doing this if you haven't already. Looks like it might work.

Terrible customer service if this is the issue, but at least now there might be a bit of hope!