Clothesline removal, replace with new one.

Located In Flatbush, Auckland. The existing hills clothesline needs to be taken out of the hole it is currently sitting in, in the ground. There seems to be a sleeve it is in, but it must be concreted in. We have tried to pull it out ourselves but it won't budge. We have already purchased a new hills clothesline, which we'd like put back in where the old one is currently. It is brand new, came with a plastic type sleeve for in ground use, but we think the new sleeve is supposed to be concreted in for stability. It is located in our back yard, flat surface right next to the concrete pad, easy access to water & power. We're hoping there's an expert out there that can help get our old clothesline out, and new clothesline up and running. And most importantly, stable. Thank you