More than a year after contract canceled ,i get slapped with a final notice warning

<p>I fought with vodacom for almost 4 months to get my cell phone contract canceld after it expired.This morning i got an email stating that im im going to be handed over for collection.My account was fully paid up when it was canceled .I have recieved no other attempts from their side to collect this money which they say i owe.Now as a result my otherwise good credit score is now looking bad.I have been on the phone with vodacom the whole day to find out why they say i still owe them and why i was not contacted sooner,they keep transfering me back and forth for more than three hours then they simply just drop my call!!!!!!</p>