<prompt> Human: Hello Everyone,A wedding vendor emailed me an invoice total for X amount with a detailed list of all the expenses. Despite being unhappy about how expensive it was I reluctantly paid the total on the day of the wedding. Later it turns out that the vendor totaled the expenses incorrectly in MY favor and is now asking for the remaining amount. The original invoice total was incorrect but the itemized expenses were correct. Can someone let me know if I am still legally required to pay the remaining few hundred dollar difference? And if not, what are the potential consequences? Small claims court? Obviously I am very upset that the total came out to be even higher than I expected. If it helps at all, I could argue breach of contract because not everything on the invoice was performedcompleted per our agreement ie vendor showing up 30mins late. Just looking for honest feedback here. Thanks all!  <response>: rlegaladvice 