Jet accounts queries

My father who is a pensioner and my niece has been struggling to settle their Jet accounts even though monthly payments have been made. My dad has on numerous occasions requested assistance to find out why his account remains in arrears, however many of the sales people have not been helpful. He has requested a six month statement for both his and my niece accounts. As they want to review what is happening. They also discovered they have been signed up for numerous policies which they are not even aware of. Please can you assist them. My dad is 70 Years old and would really like to get this sorted. I don't understand why the staff at Jet promenade mall mitchells plain would not want to assist him to sort out his account. He was told that they would look into his account, however still awaiting feedback. For any additional info He can be contacted on ***/+***9 *** cc ***