Block the number immediately if you haven't already, and document every call with timestamps to build a case for escalation. Report persistent harassment to authorities like Netsafe or your telecom provider, as repeated unwanted contact qualifies as such. Consider using call screening apps to filter unknowns, reducing stress from up to three daily rings. If it escalates, involve police for potential restraining orders. Stay vigilant but don't engage—hanging up swiftly starves the harasser of response. This pattern suggests targeted annoyance; track for patterns to aid investigations.
Number was blocked and reported to Spark and Netsafe for harassment; calls occurred up to three times daily on certain days.