Pathetic Shop assistance

This afternoon August the 13th I went to the Legendary Barber at the Randburg Square. After the hair cut I paid with my card, a few steps out of the shop the guy who cut my hair came running behind me to tell me the payment didn't go through. I went back to the shop and told them that the payment has gone through my bank account. A girl who knows too much told me how the money will bounce back. I logged on to my account and the money had gone through my bank account. By now all eyes were on me as I looked like this woman who wanted to cheat. I called my bank and they said the error could be on the side of the Legendary. Listening to the bank was very difficult as the volume of the music in the shop was VERY HIGH, I asked for the volume to be reduced but they refused. I then asked the lady who seems to know too much to please stand with me outside the shop so as to both speak to bank. This girl was so rude and disrespectful and caused a seen. I then decided to go and withdraw money and pay them and she instructed the boy who cut my to go with me to the ATM. I have never had such an embarrassing and humiliating service at the Legendary. I cut my hair at Legendary because of the professionalism and today's experience has left a bitter taste in my mouth