Contrary to your beliefs, this has got nothing to do with how high or low one's IQ is. Nevertheless, thank you for your thoughts.
I do understand it is a take it or leave it situation.
I did ask and i just received their reply throught email which is,
"....your salary is determined based on Management Support Officer (MSO) appointment guidelines and is consistent with that offered to other candidates of a similar profile."
You need to unplug that dildo from where the sun dont shine