Spam emails on MacMail

Everyday around 3am, 9am, 12pm, 3pm, 6pm and 9pm I received dozens of spam emails from bots on my MacMail to my iCloud email address. Everyday I block the senders. All my junk mail filters are correctly ticked, after long sessions on the phone with Apple. Everyday I get more and more spam. During one hour period between 3pm-4pm on Saturday, I received nearly 400 spam emails and then they just stopped for 12 hours. The Sender's details and titles to the emails are obviously spam. Why is Apple unable to stop such emails???? Why do I still receive emails from blocked senders which say the sender is blocked???!!! Why is it not actually possible to block some of the senders (who are somehow getting around Apple's systems). Apple's response has so far been that it is my fault because I obviously by retail goods online and use my email address???!!! I don't speak Chinese, Russian, Korean, Arabic or Polish. I don't visit retail sites in these countries. Thanks Apple. Please sort this out. There appear to be thousands of customers making similar comments in this forum.