No refund for clawback after being told clawback should be removed

Hi, i have moved homes however i have given my notice as well as returned the router. On the chat after much frustration they finally picked up that there was a duplicate account etc. My account was debited 3 times and now i am told the clawback is valid as i moved homes. It is not my fault that vumatel does not have infrastructure where i stay. My point is i am still with Webafrica so why clawback now?