Refund of greyhound bus ticket

So I was scheduled to take the greyhound bus at 11.30am (for the first time) to Cape Town for my moms 60th and for work. I got to park station at 10.30 am as I didn’t know the semantics of how this all works so arriving earlier was the best. While standing in a line at 11.10am I recieved a message saying there would be a bit of a delay and we all should stay at our spots. At 12.49 on the day of departure I tried contacting the company but the phone just kept ringing. At 12.07 and 13.19 I had sent them a DM on Instagram asking what the issue was but until today there was no response. At 14.49 I took a video and decided to leave the bus terminal because nothing was said. I eventually took a Gautrain home and on the way I called them and after 20mins of being on a call I spoke to someone. They had informed me that because I decided to leave the station I can’t get a refund (***). I then got asked to email greyhound but until today there has been no response. My comments o their latest post was removed this morning - so they are aware of my situation but can’t respond to any of my messages. I then commented again today to see if it will be removed. The fact that I missed work and my moms 60th is not okay. Had I been a few mins late for the bus I’m sure they would’ve left without me. Please can you assist me with this as I feel as I’m not in the wrong