Is there any risk using an agent for retirement extensions?
A member wrote he paid £250 a year to an agent to sort everything. The 800k was better spent invested at home (making more the £250 yearly) rather than keeping it in Thai account.
Why not use an agent?
In addition to what @sailingbill posted, I've read in a couple of different places, none official, the immigration boss has leeway on waiving the length of time the 800k deposit is in the bank. Thus the agents doing a quick in and out of the 800k in your bank account to keep things kosher.