Agreed o this part
Dont take it, its worth peanuts unless of course ur earning more than 6K above probably per day would make a lot more sense when pro rated etc...
Depends how Far your willing to go, you can do the following

1.Ask the HR manager to produce the company policy... (definately say u cannot see one, i know this for sure)
2.Ask HR Manager to put in writing (at this stage he/she scared like hell, will not produce it to u, instead give u 101 million reasons)
3. Now ur turn, write a Memo/leter to HR dept, saying stating that becoz ur HR Manager unable to produce company policy and put his/her answer in writing. u r entitled to take annual leave.
4. At this stage two things will happen
A) they surrender and let u take annual leave
B) they are adament and will fight until die together (suddenly they produce Co Policy)

Don't worry not yet die yet...
5. Ask them to look at ur contract, nothing in contract agreed between employer and u. So if not in contract means no apply to u!
6. 2 things can happen
A) surrender
B) No surrender still want to fight

7. Did they produce u a Company Manual or Code of Conduct? I suggest u better start reading it, if u want to challenge them. Normally the books will not mention anything about this can't offset annual leave prior to resignation... so hantam them again.

8.
A) surrender
B) no surrender

8. Jialat inside contract got say... "Bound by company policy whatever changes/amendment variation bla bla bla"
The best is of course they never say anything abt company policy, handbook, guideline, code of conduct and all the rubbish...
Than u tell them if contract got, u never give me notice also, how i know?
NO notice give = no changes to the contract = what is written in the contract and agreed between u and ur employe shall prevail.

9. SURE WIN!