Screenshot of them telling you this?
I'm skeptical, because no one has ever reported something like this before... not even the people who have been in this forum with verification issues screaming fraud and scam. If someone from Global actually told you that you must follow and promote them on social media to get customer service help, that would be outrageous. Completely, utterly outrageous. Also, a huge PR problem that is common sense they don't want. It sounds so outrageous that I need to actually see it to believe it. Nothing personal OP. I sincerely hope this is a misunderstanding because if it happened that would not be good to say the least.
Customer service has been in large part good to me. They have been slow at times via email, which I understand is the backlog created by their unexpected growth rate and staffing. They'll get better at that. Their email backlog got so bad at one point that the put "all hands on deck" for emails and temporarily abandoned this forum, which I thought was a huge mistake personally. They really should have kept 1 person dedicated to responding here first and let everyone else attack the email tsunami.
But they have since put Kimbr back into responding in this forum, I assume first before she tackles emails. But whatever her marching orders, she's been wonderful here in this forum with responses, keeping her cool, and helping people with their issues. I feel like she's repaired a lot of the damage done by the initial abandonment of the 2+2 forum.
Over all they have been good, resolved my game/technical issues in a fair manner even if not always as fast as I'd have liked. They have always been professional and courteous with me. If what you described did happen however I agree that would be incredibly unprofessional, to the point that if I were in charge, that representative would receive a stern reprimand, and if not a first offense, quite possibly lose their job. So again I hope this is just a misunderstanding.
IMO their customer service is lacking in 2 areas, both of which are fixable:
1) There is a clear lack of poker knowledge/expertise. They know the basics, but make mistakes that someone with some reasonable expertise simply wouldn't make. I mentioned this before but I think they need to bring someone onto the team who has this level of expertise to guide the group on the technical aspects, as well as provide some insight into how poker players think and respond to these issues. They are marching in a delicate area, in a post black Friday US market with lots of people skeptical already about online poker and certainly about a site touting it's legality. At the very least, contract with a poker consultant who can be tapped for the technical questions and consulted with for their take on common (or uncommon) player issues.
2) They are short staffed. I'm pretty sure this is a product of their growth, which seems like it must have been much faster than anticipated. And they weren't fully prepared staffing wise, thus the back logs. They are already working to add and train more CS people so the way to fix this issue is already in progress and I feel this aspect has improved recently and will continue to do so.
As players and customers I would encourage everyone to bear these in mind. Give them some leeway on response times in the short term. Nothing unreasonable, if you emailed about an issue and haven't gotten a response for 5 days then by all means go ahead and ask again, or post here. But people that are trying to resolve their problem by emailing 3 times a day for several days in a row, are not going to find resolution any faster and they are in fact part of the problem by sending unnecessary, redundant emails which global staff now have to sort through as they work to help not only that player but others. And if you have a poker issue, and it seems like the CS rep may not be grasping it, just try and explain it in simple terms, without talking down to them. These are people too, and they want to help you! Being a bit more, diplomatic, shall we say, than some posters in this forum have been will go a long way. More flies with honey than vinegar after all.