No Payment

I bought some things from clicks in December 2014 and at the till they charged my card but immediately after their speed point or teller machine switched and they said the charge didn't go through so they had to recharge my card. A few days later I realised they double charged from my bank statement and went back with my bank statement to rectify. I have spoken to their manager on several occasions and the problem is still on sorted. She keeps promising she will find out what is happening as she has sent the documents to their head office but she since hasn't phoned me. I need the charged reversed back into my card and Im busy incurring more costs phoning them the entire time with no results.