Never answer unfamiliar numbers without verifying the source. The missed call claiming a home‑visit from “Novalon” fits a classic spoof‑and‑scam pattern where attackers use vague product names to lend credibility. Block the number through your carrier or phone settings and report it to the FTC’s spam‑call database. If you receive a follow‑up, do not share personal or financial details, and independently look up the company before taking any action. Use a call‑screening app, enable caller ID, and regularly review your phone’s spam‑filter logs to stay ahead of future attempts.
Although I missed the call, the voicemail mentioned something about a visit from a company called Novalon, which seems to be a case of number spoofing.