I owned an inbound call center with quite a few numbers. It was a regular trip to the local telemarketers with a list of numbers to be deleted. (Customer number and associated DID) We would be good for about six months then one of their IT types would purge something and we would start over. A magazine subscription company gave their people printed lists. The poor girl was almost in tears when she found out all the numbers were our DID circuits.
I owned an inbound call center with quite a few numbers. It was a regular trip to the local telemarketers with a list of numbers to be deleted. (Customer number and associated DID) We would be good for about six months then one of their IT types would purge something and we would start over. A magazine subscription company gave their people printed lists. The poor girl was almost in tears when she found out all the numbers were our DID circuits.