I found tix I wanted to buy and never used stubhub before. I learned I needed to register... so, in doing so, the site kept looping on an error saying my phone number is needed. I input it already... exactly as the site example showed. I tried 6 variations... with no additional characters, with parens, with only dashes, both parens and dashes, with dots in between and with a 1 at the beginning... every attempt resulted in the same error: Enter a mobile/landline number as if it was missing. I engaged with their online chat twice. The first one suggested I shut/reopen my browser. While I didn't want to lose my tix, I did it anyway. It didn't work... I tried to register again and still no dice. I asked them to refer this to their technical support as there is obviously a problem with their website. I was told to call Sales to purchase my tix. I don't want to do that b/c I want to download my tix right away and this is done via the site AND I am not willing to give my CC info over the phone. I then asked if they can just register me and they said they can't. Both of the chat folks (ROBIN S. In particular) just abruptly ended the conversation with me. So, I'm stuck not able to buy tix and dealing with supposed customer SERVICE people who aren't willing to resolve the problem. I'm really unsure what the purpose their 24x7 chat serves. Looks like I'm off to ticketmaster or some other competitor ticket reseller.