Hi, my parked car was scratched up on the side by a charter bus a couple months ago. A witness left a note with their number stating that they can send me the license plate photo. They seemed very willing to help and agreeable to making a statement if needed. I had opened a claim with the bus’ insurance company and sent the agent text screenshots of the correspondence with the witness. Weeks later the agent informed me they couldn’t get in touch with the witness and issued a denial because of that. I texted the witness and asked if they could follow up with the agent and was met with no answer twice a couple weeks apart. Is there any other form of proof that I could present to strengthen my case? Thanks in advance!