Luno made a mistake and locked my account for it!

Two days ago I got an email out of the blue from Luno stating:

"You recently initiated a deposit to your Luno Wallet using instant buy with PayU, our instant deposit partner. Unfortunately, due to a system error, funds were deposited to your Luno Wallet but were not taken from your bank account. In order for us to resolve this issue, we have temporarily locked your account.

What this means for you

You will be temporarily unable to complete any crypto sends or withdrawals from your Luno account while we identify a resolution. We are sorry for the inconvenience this may cause you and will update you as soon as the lock on your account has been lifted.

Thank you for your patience and understanding."

They said they would inform me when my account is unlocked but no response so far and it is the weekend now so likely will only get feedback next week if at all. Now I understand if they might have had a system issue but why lock my account? In my banking app the amount simple just shows as uncleared and there is enough money in the account to pay that amount. There is no means of communicating with Luno on the email with it being a noreply email. Simply terrible customer support.

I honestly just feel like Luno is trying to take advantage of the bitcoin price going up and possibly they will remove a much larger amount from the Luno wallets than was deposited. I really hope this is not the case though, only time will tell.