What should I do about an incorrect visa stamp in my wife's passport after a recent immigration stamping error?

Immigration Officer put the wrong stamp in my wife passport.

So what happened?

I did a visa run and I just arrived in phuket, I'm writting this from the van as I'm going home.

We're a family of four 3 Australian passport and wife Filippino, I told the immigration officer that we all have the DTV visa.

All Australian passports got 6 months but my wife got the wrong stamp and only 2 months, was waiting for the luggage when I found out about the stamp, so we all headed back and go to her and I told her, then she said something in thai like "I made a mistake" and then start to panic, the guy next to her was telling her something like "hurry up, your queue isn't moving, hurry" she was looking for something and made her desk a mess, then she finally found it, the void stamp, take out of the box and wasn't stamping the void in red so she grab a pen and put void in the stamp and put a new stamp.

Then she gave me the passport.

I ask her if the problem has been solved, she replied yes I will fix later pointing at the computer.

What should I do guys?

I have travelled alot and nothing like this never happened to me, I don't want my wife go to a detention center because the wrong stamp.

Here some pictures of the stamps.