I call the store no answer,

Depends on the store. The one on Euclid North of Lincoln is 24 hours. Some others are. My Google Maps site tells at the specific store about that store. =^..^=

Sometimes they are helping several customers, each dept helps other depts. If the operator steps away or is too busy, she may not answer.

They ARE 24hrs

I don't think they are a 24 hr store.