I am not so familiar with the world of payment processors but OP why did you opt for them instead of other alternatives that may not bombard you with KYC if at all there are any.
Two days, I believe, is not enough to fully verify the documents that you've submitted, I don't want to call your complain premature, but have you asked them how many days it will take to verify the documents you've submitted, Some platforms took a a week or even more to verify the documents.
This is exactly the problem. The customer support just decided to go mute. Without any response, I don't blame OP for reacting that way. Maybe they should work hard on their support