Is it illegal for me to tell a hostess I am unable to give product to a guest at her party because the guests check bounced?

I have a networking business, I go to peoples houses there is a hostess who invites guests. the guests order product. The product is delivered to me, I separate it into separate bags and deliver this to the hostess. the Hostess them distributes to the guests. one of the guests $137.21 check bounced. I called the guest 5 times and left messages. the guest didn't return my calls. I then delivered the product to the hostess and notified her to as why I am unable to give her the guests who who wrote the bounced check. This guest then called me that night screaming obsenities at me and saying what I did was illegal to tell the hostess that she bounced a check. Was it illegal for me to tell the hostess that the guest bounced a check. I did make several attempts to contact the guest first. I do not work in a bank.