They will make an offer to any client who attempt to disconnect service, regardless of how long the've been with the compagny...
The offer will be different from a client to the other, the system allows a larger rebate to client's that have been with the compagny for a longer period of time. Also clients are not entitled to more than a certain amount of offer per year, so you can not call and threathen todisconnect every 3 months and get a 3 months free