How long is it normal before you get a reply from immigration with your new 90 day report slip? I sent mine off by ems and checked they got it next day. It's now a week after the report day fell due, but no reply yet. I put in an SAE with 10 baht stamps on it. is there a number to call to check at immigration?

1 week is not unusual, I and others have waited much longer. Give them 2 more weeks and then call.

Bangkok Immigration at Suan Plu could take as long as 3 weeks, now having to use your local Imm Office much quicker service.

Phitsanulok back in a week.

Once though mine did not turn up so I went to the towns Post Office, and there it was, sat on a shelf for well over a week.

The chap who could read English was off for a few days.

Now I always stick my address in Thai on a corner of the SAE.