Cancelled policy but still debit orders go off.... *******!

On 8 March 2016 I dent a mail to betterlife to cancel my insurance policy and received an automated message saying that an agent would get back to me in 48 hours. I again sent a mail on the 15th of March 2016 since no communication was received from them. Again nothing!! So I phoned the call centre about a week later which took me half a day, I spoke to a lady that clearly just woke up 10 seconds ago. She informed me that my policy was cancelled on 22 March 2016. At the end of March my debit order went of and I mailed again on the 11th of April to complain, and only an automated message was received once again, surprise surprise this morning I see that another debit order has gone of.... If this complaint falls on deaf ears again I will go and see a lawyer! I expect a full refund of all payments made to betterlife!