Terrible Jowls After Masseter Botox

I am 44 and have a mild superior jowl on my left side and went to get a thread lift just on that side to improve it. Before the procedure, I told the plastic surgeon that I also have TMJ and was curious about masseter Botox to relieve it. I was surprised that he said we could do both in the same session since I assumed we'd want to do botox first and then threadlift after the botox shrunk the jaw, but I trusted his opinion. After he was finished, I was elated to look in the mirror and see my saggy left side nice a tight and balanced with my right side. But what followed has been a nightmare. 4 days after the treatment, I started noticing worsening of marionette lines around my mouth and that my usually triangular jawline was starting to sag, giving me new inferior jowls where I did not have them before. This got worse and worse over the coming weeks as my masseter continued to shrink, thus making my skin and jowl fat (usually stretch taught by my masters) slide forward towards my mouth and hang down, until one morning I looked in the mirror and saw a woman that looked 20 years older. When I contacted my doctor he told me he "didn't know why that happened" and, in his defense, gave me a thread lift of now both sides of my face for free to correct it which unfortunately did absolutely nothing but swell up my lower face for three weeks. So I then not only had saying fat along my jawline, but the sag was exaggerated by the jawline swelling.
It has now been 4 months since the initial botox procedure and my masseters are still gone. The upside is that my TMJ pain has been greatly received, but I would have preferred to not have paid $1,000 to look 20 years older and would do ANYthing to go back in time and have not done this.