Unhappy customer

I was called by a guy called Sibusiso and he indicated that he needs to update my details on their Netstar system. As their customer I took my time to verify everything with him. On the 1st of March a debit went through. I never consented on joining anything or for the debiy. Immediately I emailed them to cancel the product and requested for my refund. Sent my bank statement and the guy by the name of Sello Gabriel Hlahane has been ignoring me ever since. He is responsible for refunds.

I appreciate Mpho Mokotong has been trying to assist me. But the Sello is making things hard for me. I really need my refund.