Hi Nishit we are closing here hopefully will hear some details from you tomorrow,
we still want to know how unauthorized purchase happened, qty of the numbers purchased:

1) We have multiple of rules on Voip site and why that particular rule x00-x00 have purchased unwanted numbers how the system can behave this way or was it a error of your inputs?

2) Why system purchased numbers but the rule has notification settings only?

3) Api allows to purchase numbers after second request how that happened so site requested purchase of junk numbers?

4) Why first purchase on numbers wty was 1250 then 1000 and third an other 1000? Whare all this quantities come from?

We are waiting for your investigation results. Please also let us know if you are able to find a competent responds and also let us know if you are unable to find out?

Cheers