disgusting and terrible service ever

on the 27th of Sep I made a card payment in the store I then saw the speed point saying approved I took it out only to realize I was supposed to wait for the cashier to take it out i was told it has declined on their side... I did not see the first slip then I was requested to swipe again I did not have any problem to do that because I am also in retail I understand these thing with a hope it will reverse back by Monday latest. weekend passed went back to the store on Monday i was asked to go to my bank for a bank statement i did I took it back to the store the very same day I was promised a call back up until today nothing. then on Friday last week the 18th of Oct I went back to the store that was then I only realized th manager did not do anything about my complaint he did forward any of my documents to the relevant authorities. he gave me a terrible services he was laughing at me the entire time when I asked him what's funny he said to me i am. he even told how much I should be grateful because he is using he's work time to try to assist me he is actually doing me a favor. I even asked him a simple question "what did you do after hearing about my COMPLAINT?" he said to me i just sat with the information hoping u will come back hence you work in the mall I was like really? he then said to me what was I supposed to do wait outside shout and ask everyone who came to our store and complain about being charged twice? his words i quote. he then assured me he has sent my compaint to the relevant person after 3weeks of complaining I just called their head office today spoke to the lady by the name of Candice Jacob's she said she has not recieved any communication from the store level regarding my complaint she even assured me someone was gonna call me up until today i feel like no is actually taking my compaint seriously. from top to bottom management. I cant be paying twice for one item. the managers name is DANIEL SAMONA thanks