unhappy double billing

Hi, Rain network provider is ripping us off. This morning we woke up to a debit coming off, which is fine. Then at 10:15 another debit order comes off. When we call them they tell us about future payments. Non of this was explained and said that we would be double debited. We are demanding a refund of the second debit and are being sent from pillar to post. It is now 14:27 and we are still awaiting a feedback call. We called again asking about our refund and we had to explain the whole story from scratch to the agent.