It depends on whether you enroll in a Debt Management Plan or just do a counseling session.

If you just do a counseling session: No. The counseling session itself has no impact on collection activity. Creditors and collectors won't know you've spoken with a counselor unless you tell them.

If you enroll in a DMP: Mostly yes. Once the credit counseling agency notifies your creditors that you've enrolled in a DMP and payments are being made through the program, most original creditors will stop collection calls. The key word is "most." Some creditors take 30 to 60 days to process the DMP enrollment and update their systems. During that transition period, you may still receive calls.

There's an important distinction between original creditors and third-party collectors. If your debt has already been sold to a collection agency, the DMP may not cover that account (it depends on whether the collection agency has an agreement with the counseling agency). Third-party collectors are not required to stop calling just because you've enrolled in a DMP with the original creditor.

For debts that are already with third-party collectors, you have separate rights under the Fair Debt Collection Practices Act (FDCPA). You can send a written "cease and desist" letter demanding they stop calling. They're legally required to comply, though they can still sue you for the debt.

The most effective approach: enroll in a DMP for accounts still with original creditors, and send cease-and-desist letters to any third-party collectors. Between those two actions, the calls should stop almost entirely.

If a creditor continues calling after being notified of your DMP enrollment, report it to your credit counseling agency. They have direct relationships with creditor hardship departments and can usually resolve communication issues quickly.