I signed a contract for dental work when I only went for a free consulation what can I do I am a senior citizen?

NIce try - but be careful playing the "incompetent grandpa/ma" card as means to get out of contracts on what is really buyers remorse. The immediate response to that when litigation ensues is to seek a mental health examination and if you claim you are too feeble minded to make a contract and doing so is exploitation, you equally feed the notion that you need a guardian at litem to manage your finances and affairs or to be instiutionalized for such. Can't have it both ways where you just play that card everytime you make a deal you don't like. That said, there may be other legitimate issues in regard to the contract that need to be addressed but you will likely need to retain a lawyer to review the documents and intervene. You can try legal aid otheriwse if you qualify but they rarely get involved in civil conract litigation issues.