******** debit order that can’t be stopped

On the 25 October 2017 a debit went off my account by a company called Platinum Life Insurance. I reported to Absa as ***** because I did not authorise it as I’ve been out of the country for months. I was referred to my branch Randfontein who managed to reverse the amount after several expensive calls abroad and emails. But I was told me they cannot stop the debit permanently and need to contact Platinum Life Insurance personally. The debit order went off again in November 10 & November 25 today.

How do I contact someone I don’t have a relationship with to stop devouring my funds when I never consented in the first place? It doesn’t make sense!!!

Any advise in this would be appreciated as I have run out of options.