Unknown debit order and company

Lets Connect has illegally debited my bank account. I had never heard of this company until they took my money. I am just wondering where did they took my banking details from, I called Absa they gave me these numbers 0123474549 but it does not go through, it says number don't exist, it went off on the 29.02.2016 for R99.99 ref num LETSCONNECRF46505056LETSCON, i still don't have a report back about this company, and when you reverse the debit order the is a charge, I want them to also pay my bank charges. I just wonder if these companies are recognised because no company can just take debit order with out our knowledge and no reason for that debit because i am very careful with my finances, It looks like some unethical telemarketer is driving up sales with my hard earned money and this is purely fraud.