Air conditioner services scam

when I was scrolling through WhatsApp I found a unknown contact message saying that your AC Needs service then I had message ok come to my location I shared my location then he came with a KNIFE Thank fully my husband was a IPS So he had arrested that person he had message me by another contact be Carefull his name is Zain his phone number: 63[PHONE] he had disappearing messages on so I couldn't share any more details or messages