Worst Service from an ISP

I ordered for fiber internet at the end of November 2021 and the router was delivered to the wrong address (we were moving houses, and hadn't moved into the new house yet where they delivered it). The courier service allegedly returned the router to SADV, and so far it still hasn't arrived to my house. About a week later, Vumatel came to install the fiber connection in our new house, but I still didn't have the router. I have phoned SADV's call center, I've left messages on their Facebook account, and also left messages on their website. Yet no one can give me a clear answer as to where this router is, and when it will be delivered to me so that we can finally have internet access in our new house! When I phoned the call center again today to finally cancel my order (because I've had it up to here with frustration with them!), I was told by the agent that cancellation takes 30 days! And when I sent an email to their cancellations department, I received an email saying there might be a cancellation fee applicable. This is so ridiculous! They haven't even given me any internet service yet! Also, seems like every time I phone their call center, the person who actually knows the answers, is always not available or not at their desk! Seriously, who runs a business like this??