Dollar General

Over weekend, my family has went to the Derry street location, store number 23508. Has had close sign several times in a day. When it is obvious there are employees in the building. One occasions I road my vehicle to the back of the store and there was several employees, one of the employee is a short Latina young lady, the other employee was Latino heavy set male and the other employee was Caucasian with red hair and glasses smoking marijuana in the back of the store. The store hours are 8 am till 10 pm and for some reason this has been the only Dollar General that has been closing for more than 1 hour at a time closed. Then when you purchase products you have a long line to pay and 2 employees not taking charge of the register, you actually have to find the employees for help. What kind of business is this? Why is this behavior tolerated?