Error code : 5613 (while purchasing zoom phone

[Isaac_Brown]

i have tried to purchase zoom phone but the time o checkout it showed me this error in the upper banner so anyone can guide me through this as how can i fix this issue and purcahse the zoom phone 
i have tried to contact support and the agent said that that's not our relevant department the internal team will work on your issue altough he generated a ticket on behalf of my issue , so what i wanna know is
has anyone got the same error like this ?
is someone aware of this error so that he/she can guide me through this ?  

and if internal team is working on this so how many days it will take them to fix this ?