dollar general all store workers insult me by calling me a slow person and talking about me to other costomers and makes me wait till all other costomers are through the line and told me they dont like me, thats why they do the things they do mckees rocks pa Pennsylvania

hello i just recently started shoping at dollar general in mckees rocks pa since aug of 2017   i bought a  cream  for my skin at doolar general and the cream burnt my skin it was to strong i took it back to show them what it did to my skin and they  just insulted me told me that  it was open and they dont refund stuff that is open so i told them how was i to know what the cream would cause my skin to rash so bad  they just laughed at me talked about me in front of me.  im 65 years old  and i was so upset i left .1 week later i go back to shop at dollar general and as i walk in the door the worker says out loude to me your not going to cause trouble today are you everyone looked at me i just didnt know what to think and everytime i enter the door that is what i go through. so i dont shop at dollar general because they insult me and abuse me at the dollar general in mckees rocks pa.. just please ripoffreport help me to correct them  for what they do to me as i am spending my money at that storte