Disgusting treatment of a client

I am absolutely gobsmacked at the lack of interest and follow through of Truworths to a complaint of mine against their store in Canal Walk and subsquent failure to follow through with a response to me and then lack of response to my request that, due to Truworths not following through on their promise to have their store manager contact me, Truworths close my account and take me off of their mailing list. Nothing. Deathly silent. Truworths...if this is how you treat your clients who have always paid their accounts timeously with you and supported you, then i will be watching on the sidelines expectantly for you to fail. Customer is king...except to you!!! I tried to keep this quiet through contacting Truworths direct and subsequently e-mailing them but since the response has been vastly inadequate, I'm taking this vocal.