Why do merchants charge your card more then once at restaurants?

Question

I went out to eat on Saturday. I looked at my bank statement and I was charged twice the same amount, which caused my account to overdraw.

Answer 1

if you were charged twice go back to restaurant and explain to them what happened most likely it was a mistake

Answer 2

It is highly probable that the server was new and/or in training and made a mistake---also the machine could have been out of paper and they went to a different machine not realizing that it went through.  Save your statement and contact the manager there.  They will make good on getting your money back and compensating for the overdraft fees.  I have been in full service restaurant mgmt. for almost 20 yrs. and would also offer a complimentary meal with drinks included for the inconvenience.