Dear Admin,

I would like to find out what my entitlement is in terms of leave days left with the following work arrangement:

• Started work in May 2014. Resigned 16 June 2017.
• There is no contract, no appointment letter prior or upon commencement.
• Expected to get an MC, but there is no medical provided.
• Even though there was no contract, after they've asked, I've agreed to stay for 2 months to serve my notice so that I am able to train the next person up. No one was hired to replace me. My last day is 16 August 2017.
• My annual leave days for the first 3 years was 14 days, and increased to 21 days on my fourth year i.e. 2017.
• Admin person in the office is now saying that he has to prorate my remaining leave days. I could have left the organisation much earlier, but I didn't. 
• I have taken 4 days of annual leave this year.
• I have 9 days of replacement leaves left. 

Please advise.