PostNet Midrand - San Ridge

I was at PostNet Midrand in San Ridge today printing some documents for a job offer I had gotten of which I needed to submit my documents today. I had googled the closing time prior to going to the shop. I got there at 17:07 of which the shop is said to close at 17:30. Printed my documents, then filled them in at the shop as I needed to scan them back today. At 17:15, one lady closed the door to the shop - not allowing anyone else to enter. I started filling in my documents at 17:18, as I had read them electronically, and I needed to just complete them. At 17:25, I was told the shop would close soon and I needed to finish up, of which I rep**** that I was almost done. I was done at 17:32 and by that time, they had already put the lights out and I was told they had switched off the machines and I would have to come back tomorrow. I am not understanding what it means to say the shop closes at 17:30, in my understanding, that is when the DOORS CLOSE - so the closing times definitely need to be adjusted to 17:20 on the website. And to think that I was done completing my forms and I just needed to scan at 17:32 - which is JUST TWO MINUTES after the supposed closing time? And I was completing these forms inside the shop, but none of the stuff members could wait TWO MINUTES to service a customer that was already inside the shop way before the supposed closing time? And I am a regular at that PostNet but it seems like customer service does not matter after 5 o'clock at PostNet Midrand in San Ridge! I am so disappointed - never going there ever again.