receiving significant amount of spam emails

[surfing69]

i have a main email account which is on IMAP server

I also have 3 other email accounts on POP3 server. 

i rarely receive spam emails to my IMAP email account BUT excessive amounts to my POP3 email accounts which i just cannot stop. I keeping blocking these but next day i see another 50+ spam emails. 

Why am seeing so little spam in my IMAP account but loads in my POP3 accounts and how can i stop this? 

thanks

[Ady-TalkTalk]

Hi surfing69, we're working hard to get the spam blocked and I'm about to raise another incident for it today. 

Ady