They will never inform u when your contract gets renewed. not even an email or sms. otherwise full day u will get calls and sms from them for feedback
They will never remove your ad also ever. whenever u complain, they will give u long procedure to remove ur ad, and you have to give them notice. they will tell u that the ecs will be cut one more time, or three more times and after that it will be over
But reality u r going to pay them for the rest of your life! So if u r not sure of ur business to last for a lifetime, go for a free listing instead of a paid one. the services are pretty much the same.