What should I do if I haven't received my visa when I start studying in the UK?

Two refusals? ! First of all, you should find out the reasons for refusing the visa twice, and then go to a professional for analysis. When applying for a visa, you must check all the details and don't refuse it because of negligence. At the same time, be sure to check your documents carefully to avoid similar mistakes of refusing visas. And I remember it seems that a new policy was issued last year, because the biggest difference between the new policy and the previous policy is that it does not accept explanations, and any minor mistakes will be refused. I don't know exactly (I didn't get a study visa). After the new policy came out, the refusal rate has been much higher. But you've handed it in now-it's no use saying there's nothing you can do now. You can only make plans after the results come out. Anyway, good luck! I hope you can pass!