Poor systems and rude service

Edgars needs to get it systems in order and train their call centre agents in public relations. Early last year I opened an account and asked for a 6-months interest- free one. When they started sending me statements about three months later I realised that they have given me an interest accruing 12-months one. I called and was told to clear the one I had first and then ask for it to be changed to 6 months. I did so on 15th Dec. 2015. When I called in early Jan. was told that the account has been closed as I had not used it for a long time and that the phone insurance I had was also cancelled. Last week I got a call from someone \on behalf of Edgars"offering me to become a club member as I am a \""loyal customer\""?? I declined. This week I got a statement for the phone insurance. I called and again told that the account has been closed and because I last used it in July 2014! The RUDE call centre agent told me that she will cancel phone insurance. I want Edgars to ensure that this is done because if they send me another I will take that as harassment. Am not interested in them anymore and want my name deleted from their system. """