They've called because their pets are unwell, their DVD is broken, they've forgotten how to use their mobile phone, or maybe they are coming out of hospital and they want someone to be there.
애완동물의 상태가 좋지 않을 때, DVD 가 고장났을 때,  핸드폰 사용법을 잊어버렸을 때 혹은 병원에서 퇴원할 때, 누군가가 있길 바랄 때 말이죠.