No customer service

I went into the store today the was a long que and only one cashier was working the name of the girl is something Thompson OK she was able to assist us but she double charged me fortunate I managed to see it I called the store to get a very rude lady she promised to call back she did after 1h30min to tell me I shud come bck to the store and collect the money no apology nothing she has a nerve of telling to come back I use petrol to come back I need the store to give me my money for petrol her name is charity u need to do something about that lady ND ur cashers