Hello Nishit for your #12868 will get site admin to create new API username,

we are closing here now, we have also asked site admin and customer about the time and qty when numbers being released and they said that in most cases big qty of numbers being released on Monday US time. Usually bocks 1000+ numbers it can be 1000 numbers then an other 1000 and so on.

Numbers release blocks are random but by blocks. From that block of numbers from 000 to 999 our competitors purchasing only valuable numbers such as repeaters 5555,6666 ,million numbers as 2000000 3000000, easy to remember 212121 353535 and so on. YThose numbers that system purchased are mostly junk numbers and no one needs them but our customers paid for that:(.

Hoping you can fix this issue.
Cheers