OK, I got it, took about 2 hours and there were hardly any other customers, just a few people wandering in for minor things.
Now, here's a word of warning if you bank with Kasikorn in Robinson, update your passport regularly as I tried to do mine after a 2 month period and, as Nomad stated, I only got a 3 line update and I could not prove my 800,000 was seasoned. Now we went into the bank this morning and they told the wife that they can only do a monthly statement for the current month, they said they cannot go back more than 30 days, new bank policy they said. Fortunately, I got a statement from them about 3 weeks ago that went back to a couple of weeks before I put my 800,000+ in and I kept it, today they did an update on my bank book and it went right back to the last entry on the statement so I was able to prove, sort of, that my money had been seasoned. Now all I had to do was convince SI. I stupidly forgot to get the bank to stamp the statement that I had and that turned out to be the only worry I had, the staff downstairs accepted it but said, ultimately, it was up to the big boss. After a wait of about 35 minutes my passport came back downstairs and I passed. Smiles and wais all round.
I am seriously considering changing banks as Kasikorn Robinson are not really with it as far as immigration rules are concerned. I have internet banking setup though and don't really want to start all over again. The male manager at the bank even had the cheek to tell my wife that he used to work at Immigration and they would accept the paperwork he provided.