The easiest/safest way would be to adjust your plan, even though it would cost a bit more and feel kinda shitty. I’m pretty sure they offer an unlimited bandwidth “upgrade” for residential plans at like $10-15/mo, and all business plans should be uncapped.
You could try to spoof your traffic somehow, but I could never get that to work reliably when I had caps. And the overage fees were worse than just paying ahead of time.