Help Swanson get surgery

About a month ago, our cat, Swanson, started having trouble going to the bathroom. We took him to the vet and we were informed that he was severly constipated. After $2000, 7 enemas, and a manual extraction, we figured that the worst was over. For the first week or so Swanson seemed happy and back to his old self, which was awesome. However, in the last week he has gone back to his old symptoms (not being able to go, vomiting, etc). We discovered that he probably has megacolon. We have run out of money to get the treatment he needs, and we are asking you to help get Swanson back to normal. He is the sweetest cat (never hisses or gets angry), and he just wants to talk to birds, watch his dad play video games, and enjoy Game of Thrones.