South African Debt Management Group not making payments or communicate

Myself and my creditors have been trying to make contact with SADMG. On their website, the "Call :***5" number has to many digits. Their whatsupp line send a message back to me as undelivered. Their other contact numbers goes dead when I call. I have manage to locate about 8 email addresses, but no response. I will not transfer any money into their account this month. Ill make the payment EFT and if they do not respond by month end, then ill cancelled my contract with them.