1) Welcome to the party!
2) when you post, please post your entire configuration including (but not limited to) your installation method and vicidial version with build.
this IS a requirement for posting along with reading the stickies (at the top of each forum) and the manager's manual (available on EFLO.net, both free and paid versions)
You should also post: Asterisk version, telephony hardware (model number is helpful here), cluster information if you have one, and whether any other software is installed in the box. If your installation method is "from scratch" you must post your operating system and should also post the .iso version from which you installed your original operating system.
If this is a "Cloud" or "Virtual" server, please note the technology involved along with the version of that techology (ie: VMware Server Version 2.0.2). If it is not, merely stating the Motherboard model # and CPU would be helpful.
3) survey dtmf digits is the digits accepted, any possible response must be listed here or it will be ignored. By default this has 1238 (thus 1 & 8 are allowed by default, so you're good so far).
4) Survey Not Interested Digit is 8 by default, so you're good there, too.
5) Survey third digit and survey fourth digit are blank by default, so 1,2,3 will all lead to an agent (removing 2,3 from survey dtmf digits will ignore those buttons if you like).
6) Survey No Response Action, however, is the tricky bit:
Survey No-Response Action - This is where you define what will happen if there is no response to the survey question. OPTIN will only send the call on to the Survey Method if the customer presses a dtmf digit. OPTOUT will send the customer on to the Survey Method even if they do not press a dtmf digit.
I read this to be the opposite of what the title suggests, but basically what this means is that if you choose "optin", the "no response action" will be to drop the call; and if you choose "optout", the "no response action" will be to send the call to an agent. This has confused many of my clients and may be your problem (if indeed you are experiencing a problem ...?).