Not happy client

I have engaged in car insurance with Miway and my debit order was suppose to go off on the last day of the month. Nevertheless they tried the debit order on the 25th of the month, resulting in a returned debit order. As all know, this stuffed up my credit profile immensely. I got very upset and called them to cancel the policy. The agent kept on saying "sorry" and did not put through the cancellation i requested. I then sent an e-mail on 31/05/2018 to cancel the policy. I also requested someone to call me back. This call back was only done on the 04/06/2018, and i was told that i cannot cancel via e-mail, but only by phone. I told them what happened, and i received an e-mail stating that my policy has been cancelled with effect 30 June 2018! Now, i am paying one months premium for mahala! Not very happy chappy at this moment!!!! is this a *******, or what? If 100 clients do this, one way of making money out of clients!