POTS is still available for new line installations and also CLEC Transfers... i.e. Rogers to TekSavvy or Cogeco to TekSavvy.
Technically.. I believe that some transfers from non-Bell phone providers are also on stop sell. In particular, if the number originated on Bell (or if it was ever on Bell--but that might be the same thing), it can not be transferred to Teksavvy POTS.
You guys really just need to implement a waiting list. Just make it manual.. Let me stick them all on my reseller, and I'll even take care of managing it -- electronicsguru.ca