I can remember something like this a few years ago when a customer emailed our helpdesk with their own internal IT support desk in copy. Our helpdesk at the time sent a complete new email acknowledging the request, which the customer's desk ALSO acknowledged in a new thread...
I think it took us a good hour and a few hundred tickets to get the helpdesks to stop fighting with each other!
I think it took us a good hour and a few hundred tickets to get the helpdesks to stop fighting with each other!