About those balck dots or spots your seeing ...
I think you should go and check the eye Doctor ... because I see them too ... but that is because I have a weak retina in my eye ... that is why I see them ... maybe you have the same thing ... Just go and check ... you will not lose a thing ...
and about the voices ... was the house used before ... I mean ... did it belong to some one before you bought it??
Some times old houses have the souls of the people who used to live in that house ... maybe the people who lived in it are dead now and for some reason they came back to their old house ... maybe they want something ... why don't you try and contact them in some way ... like ammm ... write something on a paper for them ... and put the paper the place where you always hear the voices ... then wait ... they might reply in some way ...

... try to ask them what they want ... maybe they have something that belongs to them in that house ... and they want it back ... I know that this sounds like a movie ... but just try ... it might work ...
I hope that I have helped you in some way ...
Keep in touch ... we would like to hear more about what will happen ... thanks
<span style='color:pink'>Luv is unpredictable. luv's Blind!
Luv is like a Diamond, when it brakes it turns in to dust.
Dont buy luv with money, it never works</span>