Isaiah Granet was rejected by 180 investors in three weeks during Y Combinator. Their reason: phone calls won’t exist in a year. He’s raised more than $100 million to prove them wrong. Bland, the San Francisco voice AI company Granet co-founded in 2023 with Sobhan Nejad, closed a $50 million Series C led by Dell Technologies Capital, Fortune learned exclusively. HubSpot Ventures, Archerman, and Tribeca joined the round; existing backers Emergence Capital, Upfront Ventures, Scale Venture Partners...