Frequent calls from similar numbers, like 09 887 9664, 9661, 9662, and 9659, suggest persistent unwanted contact. Silence upon answering points to automated dialing, common in scam or telemarketing attempts where they fish for active lines. Ignoring these is smart—never return calls or share info. Block the numbers via your phone settings or carrier app, and register on do-not-call lists to cut down on volume. If calls escalate to harassment, report to local authorities or telecom regulators for investigation. Tracking patterns helps spot trends early.
Daily calls come from this number and its variants (09 887 9664/9661/9662/9659); I no longer answer. Once I answered, no one spoke, so I hung up.