Disgusted at the lack of customer care service from Edgars

I am absolutely appalled by the customer care service provided by Edgars. I have been an account holder for many years with Edgars, and had always utilized the 6 month interest free plan. All of a sudden when ownership changed they automatically put me on an interest rate, among other unknown and unexplained charges. Upon emailing customer care, their response was incredibly delayed, and i had to follow up on the original email in order to receive a response. They then admitted that I was not liable for these charges, but did not change the interest rate on my account, nor refund the interest charge as promised. I had also then paid my account balance in full and requested that my account be closed. To date they are still charging me a monthly service fee for my account which is on nil, and have not even acknowledged the closing of my account. This is absolutely unacceptable and extremely poor service.