Family Dollar complaint: Consistantly bad,rude,horrible customer service

Things were good there about a year ago and I enjoyed shopping there.Since then there have been many arguments in the store at the register Idid I stear clear of but did see many times.I I didn’t even ask about a return and when I was checking my things out The women said if you open this box you can’t return it I told her it was a heater that I use and it was my second purchase so I did doubt that I would have a problem and they have to return it.very rude! And did Mark my receipt so that I would not have been able to return it no matter what condition it was in. Then when I was in the store and purchase some things for God to get any change and use my bank card so I remembered and then Fortune $4 so that I could get home on the bus and she just became all kinds of rude abusive and started yelling at me that she would not give me any change and I was to leave the store. Extremely rude and hostile obviously there is no customer service there, they need a change of personal and have a long way to go in the customer service! have no intentions of buying there in the future because of it! They are actually mean and abusive to the customer and I don’t have to be there to shop .To avoid such horrible treatment! The customer service people actually started screaming at me to leave the store for no other reason but my me asking for some kind of change for a $1 bill. They are really disgusting people running that store.