No managers during peak/lunch hour??

Yesterday 19.06, I was at Jet mart cape town to return an item. I stood and waited for 25 minutes for a manager to authorize my return as I had no slip. The cashier announced about 10 times over the intercom that a manager is required on the bottom floor however, after 25 minutes of waiting, no one came. Only to hear that all managers are in a meeting, and this over a lunch time? - Between 12:00 and 14:00 when the shop is at its busiest? I felt like crediting my whole parcel of items but had to leave after exhausting my whole lunch hour waiting for a manager and returning late to work - I was so annoyed....Horrible service!!!