Phone blacklisted

Hi Telkom<br> I received a phone from Damelin correspondence after registering with them. Free 2 year contract with BIS and R100 airtime. 8ta.<br> The 2 years have now lapsed. I thought there was something wrong with the sim card and threw it away. Bought a new sim card with Telkom, Cell C and Vodacom and all do not work. After extensive investigation, wiping the phone etc. I have been advised that the phone is blacklisted. I cannot dial out or receive calls. However I can connect to the internet.<br> I most certainly did not ***** the phone.<br> Please phone me asap so we can sort this out and not have the phone blacklisted.<br>