Can you help me about my situation?
I applied for the Tier 2 General visa for one year contract in UK.
But i was rejected of entry clearance because i did not get points for English language. I submitted my IELTS general academics but they said it need to include the UKVI unique reference number. So i am planning to reply again.
So can i use the same COS to reply under the same category? It is still in valid period.

And is that mean i need to submit the test score from IELTs UVKI?
If i need a new COS, what i need to tell my employer to do next? Should they post the job ads again and sign me a new offer letter ? And how much it cost if they sign a new COS? Because my commence date in the contract has already started from February, if they give me a new COS,what my employer need to do?
Many thanks!
I do appreciate for your responds!