Mobicred *************

I wanted to make a purchase online and when I wanted to pay with Mobicred, the payment was declined. I know there is credit available. So I logged into my Mobicred account and to my amazement, my limit has been reduced without any notification from Mobicred!! And somehow my limit is now less then what I actually owe on the account?? Which means my account is now in arrears and it wasn't. How is this possible?? This is unacceptable. I will NOT pay any interest on this "arrears" amount. I want it corrected before the end of business today!