Distinctive ring pattern even on main number

I am getting VERY frustrated with this…

Even on my main number, I am getting a ring pattern. And it is different with each call.

EG:

-- Detected ring pattern: 337,299,275
-- Detected ring pattern: 333,294,270
-- Detected ring pattern: 392,385,0
-- Detected ring pattern: 264,163,0
-- Detected ring pattern: 361,260,251

And an example from my second line:

-- Detected ring pattern: 339,300,277

So now what do I do?

There is actually a different cadence. main is 2000,4000. 2nd MIGHT be 2000,2000,4000 but then how do I figure this one out?