Hello Register,
You waiting for Interview 7 months??? Did you do your fingerprints and photo thing? Anyway, give a call to USCIS Customer Support Center 1-800-375-5283 Mon-Fri 8am-8pm. At first - write down name and number of representative which will talk with you, than give them shot explanation about your case, representative will ask you couple questions to verified your identity - first and last name, DOB, A-number (if you have one), Case number (your asylum case start with Z), may be something else... Than representative gives you a advice - what you should do! Do it as soon as possible. If you not fluent in English, ask somebody to help you, it's okay. And if you have any questions - feel free to ask, okay?
7 month ........... unbelievable
Good luck and take care.