Release Adress!!!!!!!!

Vodacom Fibre Department are Usless, i have been using theie services for 5 years now on my Mothers address. I canceled the fibre line, coz it got expensive and they wanted to put fibre on their own name. I canceled beginning of may, got all the comfirmations that the line has been canceled. When my son went to a provider to put internet on that address, they told him they can not help him, because Vodavom has not released the address. So for 2 weeks now they have to strugle without internet, because, vodacom does not want to release address, i called twice now, they can not give me a time or date this will happen. They only tell me they are investgating. When i ask what they are investigating, they tell me they do not know, they can not tell me. I canceled the line, deal with it and release the address.