[chbot] Spam - emails.

[Marshland Engineering]

I'm getting 20 spam emails a day with my main email address. 
Nil with my gmail accounts. 

I'm with Freeparking which was NZ based but now not and not so good anymore.
(Saying it nicely) They keep saying, change my spam filter settings. Surely I
don't have to set viagra as a spam email for example.   

Any local ISP that you can recommend ?

Thanks Wallace