Hi again Marion,
Thanks for the model number and YES that does help explain the "brainless" behavior.
OK - for a little background information (that you MAY know).
All of the numbers in the Block List are actually "stored" in MEMORY - and that memory is physically located in the MAIN BASE UNIT.
Also, that same physical memory is sometimes "shared" with the answering system, so when you see the "up to 30" numbers that can be stored, that can actually be a little less than 30 (if you have any saved messages, recorded a LONG personal greeting, etc.).
Now what I believe MAY be happening is that the MEMORY that stores these numbers is getting a bit "disorganized" - and the control system is getting a bit "confused" - cause all that jumping around between numbers.
So what I would suggest as a FIRST STEP - to try to correct this - is to "reset" the entire system. This SOMETIMES helps to "clear up" conditions like this, and restore proper operation.
I have included the reset procedure that I use below. This takes about 15 minutes or so, but is well worth it as a FIRST STEP - if it clears up this behavior.
Cordless system "reset" procedure.
This is done by following the steps below.
1) Remove the batteries from ALL handsets in the system.
2) Remove the phone cord from the main base unit AND the phone jack in the wall.
3) Remove the AC power adapter plug from the main base unit AND remove the AC adapter from the power outlet.
4) WAIT 15 minutes. This allows any "stuck" conditions in the components to clear.
5) Reconnect the batteries in all handsets.
6) Reconnect the phone cord between the main base and the phone jack in the wall.
7) Reconnect the AC power adapter plug in the main base unit and then plug the AC adapter into the wall power outlet.
8) Wait 30-60 seconds for the system to reinitialize.
9) Test each handset for proper function.
10) Test each function of the main base unit (answering system, caller id, blocked numbers, etc.).
Please give these things a try and let me know what you find or if you have more questions. There is a more drastic (and lengthy) step we can take if this first one does not clear this up.
Thanks, ***** *****