I answered and it's a policital survey for upcoming elections.

I keep getting calls from this number how can I stop usually they call after 8:30 in the evening

We get calls from this number a couple times a week every couple months.  If we answer there is nobody on the line.  When I called back, the answering machine says they are a Independent Survey Organization.

We get a call a couple times a day for a while then nothing. When I answered the phone guy was talking in a regular tone then changed his accent and said he was from my local health department.

I also have been getting these annoying phone calls. Just a few minutes ago, got one. So I picked up and the female wanted to know if I wanted to take a survey. I said no and hung up.