Poor customer service.

I have an Edgars account (6 month interest free) and in January 2021 I was charged interest on my outstanding amount. I sent an email on 14 January 2021 requesting assistance as to why I am being charged interest Reference AR*** and again on 29 January 2021 reference AR***. I phoned the number on the enquiry and they were unable to help. I was given an alternative number with no joy... Edgars you are bsy failing your loyal customers with these type of service.