Worst customer experience

The new Edgars, under RCS, is turning out to be my worst nightmare. First they just sent me a communication, informing me that I can no longer use a 6 months interest free facility. Now I'm battling with reducing my credit limit. I have sent emails to that regard and their receipt has been acknowledged, but my request is not been processed. I couldn't get any help in-store either. They called, but the person/department that was called still could not assist me.