Of course, it all comes down to human contact and personalities. Each company has representatives and often there is a conflict over perceived slights - or real one.
"I don't have time", is inexcusable for any rep to say although we really don't know the context of it.
ABT's issue with AMD is different. We have spoken out in public against their using stealth and their employees on tech forums. Our position can not change on this. We believe that AMD is wrong to do this.
We were cut off from review samples for the singular reason that we disagree with AMD's stealth marketing. As a consequence, ABT is no longer under NDA with them as they send us nothing since 6000 series when the NDAs expired. However, ANY NDA that we agree to, we keep. That is ABT's policy and we have never broken it and never will.
However, we are not waging a campaign against them in our articles nor on our forum and we generally like their products and treat them fairly in review. There is just one policy of theirs that we disagree with on ethical grounds that keeps
them from talking to
us.

Anyways, ABT is a far more respectable site than TT when it comes to professional integrity. Despite having to fend off much worse "attacks" from the AMD shills than TT could ever imagine having to defend against, Mark has not succumbed from keeping the main site on the level of professional ethics which went a long way in showing me how mature his stance is in this enthusiast GPU crowd.