1. Don't panic.
2. Try contacting - in a professional manner - all institutions to which you have sent your ERAS. You can send an email and call. When you call, be calm, respectful, and enthusiastic. Do not demand to speak to the program director. Let the person who answers the phone know that you are very interested in the program and would appreciate the opportunity to interview. Offer to be on an interview wait list if necessary.
3. Prepare for the Supplemental Offer and Acceptance Program (SOAP). Note that SOAP is not a separate program from the residency Match. So a) your main residency Match user status must be active and b) your credentials must be verified by the Rank Order List Deadline in order to participate in SOAP. Here is more information on SOAP.
4. Make a plan for what you will do if the Match and SOAP don't work out for you. What will you do next year? How will you improve your written materials, interview skills, and overall candidacy? If heaven forbid, you do not have success in either the Match or SOAP, please consider getting help from me or someone else who is experienced. The sooner the better to improve a candidacy and prepare for a re-application.