How to Treat a Hematoma That is Now Infected?

I have gone through so much. After bleeding from the wound for weeks after having a hematoma removed after a tummy tuck. I was told that it is infected. My PS said he must go in and open the wound to clean it out. This will be my 3rd surgery. I dont want to do this again. Is it mandatory? Are there any other options? Is this normal to treat the infection? 3 surgeries seems like a lot. TT was done on Oct 23rd. Complications ever since! Please Help!"