Attempted Email breach by Russells employee(s)

I was notified by Experian a few months ago that there was an attempt made to breach my email by an employee belonging to the JD group. I had an account with Russells in Newcastle KZN and suspect it might be linked to one of their employees. This breach has negatively affected my credit score and I'm concerned about whether they might be successful with their attempt in the future. I tried reaching out the JD group by email but received no response or any form of communication to resolve this matter. How are future clients supposed to trust their retail brands if their staff make attempts to ***** their clients information for negative use. I'm highly disappointed and frustrated to say the least.