Hello again, Charles, and thank you for providing this additional information.
Unless the contract states otherwise, there would not typically be a right to rescind the contract within a certain period of time. Most contracts are binding from the moment they are executed and the legislature has enacted laws to provide for a cooling off period only in limited circumstances.
Here is a link which summarizes the law in IL:
However, if the seller has not fulfilled their obligations under the contract or engaged in fraud to induce you to sign the contract, those circumstances would typically provide grounds to terminate the agreement and pursue a refund or sue for damages.
If this is the case, then I would dispute the charge with my credit card company as well as sending a written notice by certified mail to the seller setting out the reasons you are terminating the agreement.
I hope this helps clarify the situation for you. Please remember to rate my service once you have all the information you need so I will be compensated for my time from the deposit you posted with this website. If you have any other questions, please ask me – I’ll be happy to respond. Thank you!