Edgars bad customer services.

I asked Edgers several times for a detailed account for my Mom that is 75y. We sent an email on the e1st of July and again on the 6th of September. We paid the account in full in May and now they do not bother to answer me about the account, because now suddenly their is more that R500 outstanding. The customer services is very pathetic and don't do their job. We have this account since 1969, but really we don't just want to close it.