Customers don't matter

Last month my debit order didn't go off and I tried to get a hold of someone in their accounts department. After days of being told that everyone was busy, to we don't allow anyone to speak to accounts, to managers don't give out their names to just not responding to calls, emails, Web posts and Facebook messages I gave up and went elsewhere. Now Zelda who has not called but finally got someone else to call basically says I must cancel and pay for a service I didn't use because I have to adhere to terms and conditions. They do not take the time to help a customer wanting to pay and then go all Legal on me for R300. There was someone not a manager who called yesterday and all I got after that was I must cancel and I must pay. I never agreed to dealing with people that hide from customers.