Disgusted and frustrated

I am a widow disgusted by the outcome of what I thought was reaching out and asking assistance to continue paying my sons car installment . My son purchased a car December and recently was in between jobs , I however contacted the consultant requesting that they debit my account not to fall back on payments , she then informed me that he should contact them instructing them on this , which he did and included me on the email, I received and read but saw nothing from her side , 2 days after our converstion and emailing instruction a gentleman came knocking on our door looking for my say saying that he is unemployed and a risk factor on not paying the car. Shocked and appalled of the outcome now we having to pay over 12K of charges lord alone knows what they are and why to get it back which could all have been avoided if she could of just followed instructions. Now my son as young as he is will be sitting with a bad credit record and in todays day and age difficult getting employment , tried his best to keep the car because I would of assisted , Can we get the car back paying the amount owed besides all the other charges after repossessing it , I think all this could of been avoided had they just followed my sons instruction but in turn thought they could bleed us dry for all those other charges ,