I keep having problems

I swear they use to be very good. I often praise them even when I'm in a forum. They used to be my go-to broker. But as time goes on, their service has deteriorated. I keep having problems here and there. This has happened so often that it started to annoy me. For instance, my withdrawal request has been denied several times. The reason is pretty much ridiculous and saying that I don't submit the required documents. But I did! I already double-checked everything and they still denied me.