They have to provide you with their "witness list"
by a certain date per court docket.Check with the
Court Clerk about this date. THEN: Call OR write
them "Where's your witness list?" ---- If no answer
then file a "Motion To Produce Discovery - Witness
THIS ANSWER IS PURELY FOR ACADEMIC DISCUSSION ONLY AND DOES NOT CONSTITUTE ANY TYPE OF LEGAL ADVICE OR LEGAL REPRESENTATION.
Isn't there a Case Management Order in place which says what has to be done and when? File a motion to compel the witness list if it hasn't been provided as per that Order. If Small Claims and witness list hasn't been provided, then unnamed witnesses can't be called. But you really need to proved more info, my answers are general answers and you need specific answers tailored to your specific circumstances.
If you think my response is the best response, it would help me if you would indicate that. Also, please note that my responses to question(s) are NOT legal advice from me to you because I am NOT your lawyer, you are NOT my client, and we do NOT currently have an attorney-client relationship. Thanks!