It's not a pain caused by financial damage because as you might guessed already, getting in again is 1-2-3 process. That's obviously if the disabled publisher care to re-join in the first place. A LOT of people neglect this fact and choose to go "don't whine! it's all your fault!" in spite of it and moreover intentionally neglect to look at the comedy show run by the 3rd party company they are members in as publishers or advertisers, or at the next new GAN CPA model, affiliates and advertisers.
It's more of an 'emotional' pain caused by being betrayed in a business relationship, as shown in misleading emails and funny but-not-haha errors and not neglecting any appeals, and moreover being literally stolen.
It adds up to it when you see a considerable portion of the webmasters community being "the sheep" or "the drifters" as long as things don't hurt them in person. It's sad to see old-school webmasters contradicting with BASICS like which party is the backbone of a PPC network; is it advertisers or publishers or which party is the backbone of a CPA network; is it affiliates or vendors.
I already have moved on ever since 48 hours had been passed from my appeal request. The motivation behind this thread again was to represent a real life case to a sample of the webmasters community and then to sense their reaction to it.
Both has been achieved, so thanks for your input, everyone.