****** and lost

while being phoned for upgrades discovered have been paying unused data contract for 2 and a half years. Vodacom blames me for this ? I haven't had an account for 4 years as Vodacom sends it to an unused address. every time I visit a store they take down my new details but don't update there system ? my residential address is current , wonder how that works? customer service blame me and say there is nothing they can do. cancellations promised to come back to me as they were offline but didn't ?????? we pay Vodacom for a service yet they don't provide one ??? 5 phoning hours later ..........