Perhaps the attorney didn’t log the call. It could just depend on who wrote the email and the information that person had.
Before COVID, it was not unusual for certain hearings to take place by phone (telephonic appearance) with the court’s approval. At least with Zoom, you can see the actual person with whom you’re speaking.
I was not in magistrate court, so I can’t know for sure what you’d need. Here’s a guide from the SC Bar Association. Hope it helps.
Your next step is to start arbitration and pay the arbitration fees. Now that you got the Motion to Compel, the idea is to keep the ball in the plaintiffs court and let them decide what they want to do next. The ball is in your court now to get this started so get things going ASAP. So get things started with AAA and go from there. Calvary's attorneys will eventually contact you when they start getting the bills for this case from AAA.
Depends on how the judge ruled on the Motion to Compel Arbitration. If the judge completely ended the case, then there is nothing you need to do on the court side. If the judge simply stayed the case pending arbitration (more likely), then you need to file a motion for sanctions in the court stating that Midland refused to comply with arbitration. In the motion, you ask for a dismissal with prejudice as one of the sanctions.
That said, because the case was not tried on its merits, you might not be able to get the trade line removed. If you do end up requesting sanctions and get the dismissal with prejudice, then you can try to get it removed and become a thorn in the side of the CRAs, but don't be surprised if Midland fights this because at this point, their only leverage is to keep the trade line on your report as long as possible.