La Bella RX-S4B Bass RWSS

I can't go from the fact that La Bella is the string company that has the worst customer support out there.
I really don't know how the strings are, but here is the situation.

I ordered 2 packs, place one on jazz bass, other on precision bass and the result was D string was not good. How to explain it hmm, it was kind of fluffy, not tension you would expect, and it made some kind of hum.
After recording video with the problem and sending it to La Bella, they did not reply. I've send another 2 emails but nothing from them.

I love my deepTalking flats from Labella, but i am never ever buy any string from Labella again. Just because of the baddest customer support ever.

Let me just say that few years ago i ordered DR strings, and had similar problem. DR sent me whole new pack, and LaBella did not even try to respond.