Negative membership?

Ok, so I login to an oldddd account I made, refer to my "BBS's journey to a DFSBANDOPURE" thread.

I login and it says, "Your account has negative membrship credit."
So I go to account management and it says I have to paybycash blah blah blah.

Is there anyway I can do this other then pay by cash?

I've heard that they're strict when it comes to negative membership and they only allow payment through their specified method.

Yeah it goes to that PBC screen, I might try to use someone elses phone and do a Pay By Mobile, (Which is what I usually do, but I guess my mom blocked and cancelled it.)