Billionaire Elon Musk said on Tuesday his bid to buy Twitter won’t proceed unless he gets proof of the number of spam accounts plaguing the platform, adding more uncertainty to his rollercoaster pursuit of the social media giant. This latest twist to his $44 billion move to acquire the key platform sparked speculation over whether the world’s richest person was trying to shrink the price tag or even back away from the deal. Hours after Musk’s early morning tweet over bots, Twitter insisted the deal push through, and without delay. “Twitter is committed to completing the transaction on the agre…