Some time ago, we newly upgraded from ADLS to NBN when it became available in our area. You sent to us a new modem but no NCD. We have FTTC - do we required the NCD?    Later on you upgraded our modem as the model was outdated/not compatible (you did not notify us, only by chance i was calling regarding another issue) and still no NCD mentioned or sent.   Am confused. Your video tutorial states we need this. Please advise. Have we not been receiving the level of internet we have been paying for all this time? Does this explain why our service/connection has been so bad?  ... View more