Internet connectivity keeps dropping

​For the past few weeks, our Comcast Business internet connections keeps dropping out. It drops out throughout the day. We are monitoring and get emails when it drops and has probably already dropped 20 times today. 2 different Comcast technicians have come on-site and said they see issues but then it doesn't really go anywhere after that. We had a technician yesterday that said he would report it to his supervisor, when I log in to our account and look at support tickets, that ticket is marked closed. I am now on my 3rd ticket for this issue. Why does Comcast keeps closing our tickets when they said they see an issue but are not fixing it? I have all the ticket numbers if that would be helpful.​