What should I do since I still have swelling after more than 2 weeks of root canal?

After having a crown put on and horrible pain, extreme swelling and infection, I then had to have a root canal done through the crown. I think it's tooth #21. It's been a nightmare that started almost a month ago when I had the initial crown done and antibiotics started 2 day later by the ER, and I am still on. I've had many numbing shots from the dentist assistant first, 2 ER doctors (because my dentist went on vacation and mistakenly didn't have the right on call dentist, and the ER doctors after 3 days of consecutive visits still wouldn't call in an oral surgeon) the actual dentist as well, and then oral surgery to drain the infection out of my face and put in an actual drain (after my dentist came back from vacation and immediately got me into the oral surgeon). The swelling has went down but still is swelled and numb around the area where the tooth was. The gums seem to be ok, but not the inside or outside of my face. The tooth is still sore to touch, mostly on the outside. After my second course of antibiotics were out the swelling flared up more so the surgeon prescribed more (3rd course of antibiotics) and I go back for another checkup in 2 days. Nothing is changing and I fear that something is really wrong and I'm not being told everything from the dentist or oral surgeon. They may take out the tooth, but will that even help or be able to make sure they get it all (maybe some root that may have been missed ?) after the root canal? Please give me some truthful advice. Should I go somewhere else? It's not safe for me to be on antibiotics this long either. Who knows if they are working anymore. I'm scared. Please, please give me your honest advice. Thank you.