RMCS & Edgars just taking away options

I have always purchased airtime through my Edgars account. It is just more convenient. All of a sudden, they just took the option of purchasing airtime away without even notifying me. Now they won't even respond to my messages. I was given a reference number, and was then told that they don't work with these problems over a weekend or public holiday. (why give me a reference number then?) I just think it's poor business ethics to not let a a paying customer know what is going on.