[PHONE] series,,& [PHONE] series

[PHONE] series [PHONE] series every 15 minutes call receive daily 50 call receive par day last digit change every call example Last digit 101 105 110 202 305 416 576 number of call how can telephone department give permission to call every 15 minutes they have thousand of number starting number 89138 & [PHONE] this both series telemarketing call