Nsdl E-Governance Infrastructure — acknowledgement receipt for tan application not generated

I have applied for tan on nsdl website, but after the payment, the acknowledgement receipt was not generated, acknowledgement no. Is - [protected], name - ghewar chand borana, the pdf which was downloaded was of 0 kb and was not openable, on sending emails several times, no resolution was provided, the customer care no. Provided on there website is also not getting connected, it is switched off from past 15 days, kindly look into and help us getting our tan acknowledgement receipt so that we can sent that duly signed copy to nsdl to get our tan