Being given the run around, and still expected to keep on paying

Do not take a new contract with Vodacom!!! I have been with them for years and recently took a contract with a Lenovo laptop device. The computer stoppped working. Since the contract started, my bill has increased 3 times the contract amount. I went to Irene village mall to sort it out and pay the insane amount, They told me I had subscriptions - I cant tell you for what. They cancelled it. After that my bill just increased to the the point where it is simply not affordable! I have been to two more shops where they wouldn't take my laptop for repairs - only to be phoned by this guy wanting to know why my account hasn't been paid. He told me to go back to the shops and talk to a manager - again.... Oh, and my subscriptions wasn't cancelled so I am still billed for subscriptions! How do they expect customers to keep on paying these types of amounts and they won't assist?