Sat in parking lot for over 2 hours. Help!!!

Ka

I don’t know if anyone else has been through this. I have a 9 year old son and he is to visit his biological father every other weekend supervised. Any time his father or grandfather is present to pick up our child he refuses to get out of the car and go them. Has even said he would rather die then go with them. The grandfather is an alcoholic and so is his half brother and I suspect that the half brother is on harder drugs. My sons biological father rarely calls to check up on him 3 times in the past 17 weeks 2 of which he was in bed asleep for school. Constantly lies to my son saying he had gotten him toys or will take him somewhere; which my son is to the point where he calls him a liar. My son has told me he feels used by his biological father because the only time he does anything with my is if his biological father has a new girlfriend. My son has met almost 20 new women in the past 5 years which I find absolutely ridiculous. This is all happening in the supervisor home. Please someone if your are going through the same thing or have I need your advice.