Clearly seems to be a cloud server / character save issue. Why would 'banning' take that specific form. What does XXXX / 0 signify? Why would some progress appear (RP, money in bank) but not others? That has all the markings of just another example of the umbrella 'progress loss' as R* keeps calling it.
Hundreds of thousands are playing Online, tens of thousands (presumably) have attempted 'glitching' in some fashion or other...this is the first we've heard of a 'banning' taking this exact form. If we had dozens of examples of other players who glitched and had this behavior minutes or hours later that would be something. This looks and smells like a one-off.
If R* were serious about fixing the economy and punishing glitchers, they'd announce loudly and clearly "we will be issuing bans for anyone using exploits/glitches to increase their wealth'. That would dissuade the hundreds of thousands from even trying, and help keep the server population strong by not giving R* a reason to kick numerous players out of the game. Keeping bans cloaked in secrecy and rumours does them no favours at all.
Why would you assume 'I'm banned" and do something else instead of call their support number, give them all the symptoms, and see what they can do? Lots of technical possibilities here, jumping right to 'banned' seems very premature.
So you'd best hit your local liquor store and get smashed or whatever like you said. I think you're looking at a potential 'loss of progress' here. Probably not much you can do except keep trying, call support or just wait it out. I assume it prevents you from rolling another character? Risks there too, in case it overwrites something on their buggy servers...