Insurance that I didn't sign up for

A consultant from home loans insurance phoned me last week I to offer me insurance I explained to her that I'm not working, Again I got a call from Everlyn from home loan insurance I told her to call the following day she didn't call me the next thing I received an sms to say that my new debit order will increased to R9984.12 I phoned when I was retrenched they told me I still have to pay full installment which is R9500 already I'm struggling to raise that money now the force insurance that I didn't sign up for nor speak to anyone about I want my normal installments thank you