Hi

Probably the best thing you can do is to write to the applicable USCIS field office where the interview will be conducted or the US Consulate if the interview is to be overseas giving as complete details as you can concerning the intending immigrant and the petitioner. You may also wish to send your correspondence by certified return receipt to keep a record of when the appropriate agency received your withdrawal notice. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.