Rude and unprofessional Supervisor at Tygervalley

<p>On Saturday 10 December I went to Pick n Pay Tygervalley . When I got to the till point to pay with my TUYO app which I always use there. The cashier didn't know what to do it. I then asked her to call a supervisor too assist. Cashier then called Wendy to assist. Wendy said I need to purchase for more than my available balance. Which I found strange, (no logic) anyway she tried it and the app and till point said insufficient funds. Then she yells out loud sir it's insufficient funds! Embarrassing me in the queue. I asked her if there's a manager that might know how to process it. She points out to the office with an attitude not even offering to take me to the manager. Complete disregards towards client service. She was blatantly rude and made me feel like a nuisance. I then explained to Johan whereby he politely assisted me with my purchase without a glitch. Wendy seriously needs her attitude adjusted. </p>