Pensioner being ******

I am writing this on behalf of my Mom who is a Pensioner. A few years ago my Mom was approached by a Chubb Security officer who was getting people in the neighbourhood to sign up. It was a limited time deal as to his conversation with my Mom and would only cost her +-150 per month as she was a pensioner. Needless to say y Mom was satisfied with the price and asked that she be signed up. It has been a couple of years since and the amount that she is now paying is R326.28. This amount gets deducted on the 24th of each month and again on the 1st of each month, which totals= R652.36. We have asked Chubb to come and remove the alarm system as my Mom and our family cannot afford it anymore, but they refused. My mom is extremely stressed about this as she cannot afford the amount that I have showed above. My Mom is aged 78 this year and Chubb is daylight robbing her, and I hope that by me bringing this into the open they would respond to my mom Favourably. They in fact they owe her double amounts of debit orders that they have ****** from her every month. My Mom thought that she would be bettering her life by installing an alarm system, but now her health is suffering because of it!