Dispute with FNB's debit card disputes

I received an automated email from ********** Stating" Please advise what services to you purchase from this merchant, Please submit the Merchants Terms and Conditions for refund and cancellation" to which i rep**** below

From: ********** Sent: 20 December 2018 03:10 PM To: **********

Subject: Re: FW: Fwd: Welcome to WorldVentures - [External Email] [REF: ********** 3_ ********** 71]

Hi

There was no response from Merchant infact the email i sent to them did not go through. (see below). Scrolling further down is a welcome email i received. I have attached the invoice they sent.

Please could i request FNB also block all future debits.