Refusal to FICA my account

Absa text messaged me last year to submit FICA documentation to prevent restrictions being put on my accounts. I went to Vangate Mall branch who refused to accept my electricity account as proof of residential address. I laid a formal complaint about this (on which I received no proper solution) and spoke to the FICA number provided on *** and on their suggestion submitted the necessary documents to them via email [Email Removed] to the email address they provided on 12 August 2015. They do not acknowledge my emails, yet continue to send me text messages telling me I need to submit documentations to prevent restrictions on my account.