Swiss Chalet complaint: Found bones in meal..cold soup, rushed to finish eating, not handled satisfactory by management

On the evening of March 6th we went to swiss chalet close to 7:00pm to enjoy a nice meal. My husband ordered a rib sandwich and found 3 bones..2 small, but one about an inch and a half long. I don’t like making a scene so nothing was mentioned to our waitress at the time..but we really were quite dissapointed..3 bones is not acceptable.. what if he choked? I ordered a chicken on a bun and soup. And the soup was cold. On top of that we felt really rushed ad it was getting close to the end of the night and were being asked to pay for our bill by a different waitress even thou we weren’t done..and there were still others in the restaurant .I know we should have mentioned something there and then..but I chose to write a complaint to the manager of the store. He responded a few days later with a heartless apology and a an offer of a 15% discount on our next visit. Although that was something..I honestly don’t feel like that was enough. I’m not looking for any free food.its not about that. It’s the lack of customer service from that particular manager. I wrote back to him expressing my thoughts and have heard nothing back..which has really angered me more. Hence, my letter to someone higher up. If these managers treat all customer complaints like this,You are going to lose a lot of business. Perhaps some sensitivity training to staff and managers. , because we certainly did not feel like a guest..or that our complaint even mattered.And even thou swiss chalet has been one of our favorite restaurants.. this episode has us rethinking ever going back.