Unwarranted suspended service

I find the business ethic of Vodacom lacking. There is an open hanging dispute between me and their accounts department for a fee that i did not incur, yet due to me not allowing them to debit the amount me they suspended my service. This, instead of picking up the phone and speaking to your customer. Are your staff so afraid to phone a client. Please can someone with the require empathy for a client urgently contact me that we can amicably resolve the issue.