Bad Service from National Freight Movers

I contacted National Freight Movers on the 1st of June 2025 to do a furniture removal for me. They asked me for a list of goods, we agreed on a price, I was invoiced and paid on the 2nd of June 2025. They said the truck was leaving on the 3rd of June and that my furniture will be collected at 3pm in the afternoon. By 5pm I was still waiting, so I decided to call them, didn't answer the call but messaged to say, they were still busy with other pickups, will collect mine as soon as they are done. They only responded the next morning to say, the person they were waiting for wasn't home for them to collect the furniture so they couldn't collect mine. I asked them to refund me, they said they had another truck doing the route the Saturday, 7th which will be able to collect my stuff the Saturday. I waited whole weekend. On Monday, they told me the truck had already left the Friday. I requested a refund, apparently, they only have an email address to send the queries to, and no one is responding. The person on WhatsApp is not taking calls and keeps promising the refund, but no payment has been made since I requested it on Monday 9th June. I was first told within 7 days, then I was told the finance person only works certain days. I have been blocked by them on Facebook, so I cannot do a review there. There is no communication with regards to my refund and its almost a month now.