Shocking payment system with disempowered store managers

I am super mad with Woolworths! Their payment system doesn’t allow for a simple error made by the till operator to be fixed & their store managers are not empowered to find a non time consuming customer friendly solution. As a single working mother I shop at Woolworths foods for convenience & swift shopping. Yesterday evening at 6:30pm after work, whilst my daughter is waiting for me at home, Woolworths couldn’t finish my payment transaction for my bi-monthly groceries at the Clearwater mall store. I wanted to partly pay with my Woolworths visa card & partly with another card. The till operator made an error on the system by selecting full payment with my Woolworths visa card & it didn’t allow for me to pay the balance with another card. Even after getting a supervisor & a manager involved they couldn’t find a solution. I even offered to pay the balance in cash, but because the system didn’t allow it, it wasn’t possible. 20minutes later they sent me to Customer service to find a solution & they also said the only way to fix it was to reverse the entire transaction or phone head office. If they reversed the transaction the money will not reflect back in my Woolworths credit card immediately, which meant that I won’t be able to conclude my transaction & get home without groceries. All of this whilst my daughter is waiting at home & I understand time pressures to do more work when I get home. only 30+ minutes later when they got the store manager involved did they accept my solution to pay the outstanding balance in cash. I expect Woolworths head office to offer me a formal apology, as well as a shopping voucher for the extreme inconvenience & stress that they have created for me. And PLEASE FIX YOUR SYSTEM!!!!