Bad Bad Service

I Need to contact accounts dept. in connection with cancelling debit orders . I was laid off from work and have been paying this account in advance . I have tried phoning and was cut off ample of times . this is getting unacceptable. this is no way to treat clients .I now have no other choice to stop paying Vodacom until they contact me . I request someone from upper level management to contact me urgently please, I need to solve this problem. Vodacom has also put additional fees on my account due to debit orders not paid but , the account is paid and has never been in arrears .