QUOTE(genkis3 @ Oct 22 2016, 03:21 PM)
it's non gated.
it just a simple agreement for majlis perbandaran that i've agreed to let them rebuilt.
local council also send me letter to inform that i can dispute within 21days but i didnt.
actually they not willing to compromise that's y im seeking advise here. when im try to discuss with them, they have told me that have no right to do anything actually. is that true?
That letter in which you have signed for the Majlis is the consent letter your neighbors needed to get their application approved. So, technically speaking, you cannot revoke your consent after the thing purported to be done has been completed.
Since there is no Deed of Mutual Covenants signed then basically, the only avenue that you have against your neighbor is through a civil suit and it is not true that your neighbors told you that "you have no right"

everyone has civil liberty rights. It's an inherent right and cannot be taken away.
The only way I can see if you can dispute is by raising the fact that when your neighbor passed the forms to you, they misrepresented to you or they had the intention to mislead you, inducing you to sign the approval letter. Did they or did they not pass you the specification of the wall that was to be built at that material time of signing?
Whatever it is, like I said, if they are being adamant in negotiating and trying to play hard ball, you can play hard ball too. Seek a legal counsel's advise and issue to them a letter of demand.