kamikaze-Tech writes "As its shares continued to sink following its initial public offering last week, Vonage Holdings Corp. (VG) said it plans to hold Customers who promised to buy IPO shares to their pledges. In a WSJ article posted in the Vonage Forums; a Vonage spokeswoman said Wednesday the company will pursue payment from customers who renege on their agreements to pay for the botched IPO shares. Shares of Vonage, which offers Internet-based phone service, immediately plunged from the $17 IPO price, and they closed Wednesday at $12.02 in 4 p.m. "If they don't pay, we will reserve our right to pursue payment," said Brooke Schulz. She added that speculation that the company intends to buy shares back from disappointed investors are false. "They are taking a risk if they choose not to pay," she said."