Miners refunding transactions is not completely unheard of, as ASIC miner refunded a more than 200 bitcoin mining fee paid by a customer approximately three years ago.
...and probably regretting it big time now,200 bitcoins is effectively 250.000 USD now
joking,of course,was the right thing to do
but this is always your fault,should be very careful about the figures you type in
especially when there are substantial amounts of money in your wallet
compare it to writing a check instead of 10.000 to 1 mil and handing it over
