I need to buy an unlimited Business Manager (BM) account—or one with a $100k daily limit—for mass messaging on WhatsApp.

I am URGENTLY looking for a Business Manager (BM) with a daily sending limit of $100k or unlimited capacity, or a setup with proven capability for high-volume messaging via the WhatsApp Business API. I am immediately interested in purchasing and ready to negotiate... (Budget: $500 - $20000 USD, Jobs: Account Management, Advertising, API Integration, Bulk Marketing, Digital Marketing, Facebook Ads, Facebook Development, Facebook Marketing, Facebook Verification, Lead Generation)