I am so sorry for your situation,I would suggest you contact a very good solicitor and seek legal advise soon as possible.They should be a technical grounds for you .The evidence they have is circumstantial you should be ok.

Hang in there and fight you will overcome

Was in the same situation as you ,Its can be a bit frustrating in getting a date to do your Life in the UK.So we sent our application without the certificate and informed them to put the decision on hold because of non availability of dates and when you will sit for it.Just inform them and you will ...