SPAM Call Harassment

In the past two (2) months I have had to block 15 different numbers from this filthy organization. I have never experienced so many SPAM calls from a single organization in my life. You block the current number they SPAM call you from only for them to use a different number a few days later. I have never conducted business with this mob and will never conduct business with this mob so why do they keep harassing me ?

If they continue this harassment I will be taking legal action.