I have been with tpg adsl2+ since 2007 or 2008. recently you have installed fttb on my building, and since then you have sent not less than 5 sms, and several phone calls.
I m paying $50 at the moment and won't pay a cent more. With current adsl2+ , tpg is paying line rental to telstra etc, therefore the profit margin should be less.
Since you have completed the fttb installation on my building and value me as your loyal customer, you should give some incentives to me, but you offering me what other people can get as well.
your marketing team should calculate, longer that line wasn't use by the tenant, then you are paying double cost.
1. cost to pay the rent to telstra, could be $10 - 15/line
2. cost of your investment to install that line in my building.
So if your marketing smart enough, they should give some carrot to your existing customer.