Can I get collectors to stop calling me?
Yes. If you send a letter demanding that a collection agency stop calling, they must honor your wishes. However, this does not barr them from pursuing legal action against you, nor will they be prohibited from reporting the negative information to the credit bureaus. A collection agency typically seeks other means of collection rather than return the account to the original creditor.
Note that a collector calling from the original creditor is not required to cease communication. The rule only applies to third-party collection agencies.