some incoming calls not showing in call log

I've noticed in the last two days (it could have been happening longer but just didn't notice), that some toll free numbers are not showing up in my call history but the calls are being completed and sometimes I answer them and it's a telemarketer.

The one I just got a few mins ago had TELEMARKETER and the number showing on CID but the call/number is not in my call history.

Also, at least once it seems, on a call that did show in my call history showed a different FROM number that what the CID displayed on my phone.