Send them a certified letter with a copy of your agreement.
Demand they comply with the agreement or you be forced to
seek legal action.
See what happens next-if they have a right to change the agreement
in the fine print-you will be advised-if not-seek legal assistance.
The answer given does not imply that an attorney-client relationship has been established and your best course of action is to have legal representation in this matter.
I agree with Counsel in that if the agreement so states, send a certified letter. It is my understanding that a co-signer is as responsible for the debt as you are but if Chase agreement with you states that they would only contact the co-signer if there is a default situation then they should comply. Good luck to you.
DISCLAIMER: This answer is provided solely for informational purposes only. This answer does not constitute legal advice, create an attorney-client relationship, or constitute attorney advertising.