Do you take a fee on deposits to WalletBit? My balance and what I deposited (less the purchase) are not equal 
Yes, see my post above.
I was surprised too, this was the first service that took deposit fees I met so far. And you really need to dig the site to find that information - I would expect to find it alongside the deposit address...
Anyhow, after this disaster I'd expect some fairness and the fees to be refunded in full.
Let's hope and wait.
The merchant pays fees - not customers!
I want the mining rigs, so w/e, take the fee ... but I gotta say this interaction with WalletBit has been a horrible experience.