I had butt implants almost 5 months ago, and after 9 weeks an open wound was restitched twice and now its bigger what can I do?

It sounds like you're having Extrusion of your implant and is that case they may have to be removed. I recommend you go back and forth with your surgeon again. Best of luck

It sounds like you  might have bigger problems. If the implant is exposed or draining, you likely will need to remove the implant.

Trying to simply close a separated intergluteal incision wound after buttock implants that has failed to work twice suggests deeper problems that just at the skin level. You did not say whether your buttock implants were intramuscular or subfascial. I would be suspicious that in the depth of this wound lies the implant or a seroma cavity and this is why the wound is not healing properly. You need to open up the incision more thoroughly and find and deal with the real source of the problem. Undoubtably the source of the problem is the implant which is the only reason normal tissues do not heal months after an implant has been placed. Whether this surgery will involve implant repositioning or implant removal no one can say until the wound is opened and the source of the problem identified.