@Kalpika0
Do you have some kind of travel/student/etc insurance you could attempt to submit a claim to? I am not sure this would work or be covered, but could be worth the try if applicable.
Also, based on what you wrote, it would seem that your circumstance falls under the "other personal circumstances relating to a guest’s authorisation to travel", which is not covered by extenuating circumstances policy. I understand this must feel most troublesome to you, but as you yourself stated, it is a delay in the process, instead of an actual, unexpected change imposed by the government.
Correct me if I misunderstood something.