Horrible service

I keep on sending emails and smartcents messages and they are not being acknowledged nor am I getting feedback from debt busters. I am currently home since the beginning of lockdown due to my company still being closed. I can’t afford the monthly instalments and was advised that they can’t re negotiate with creditors. I then made an arrangements of paying 50% with a condition that MFC gets their full amount as they made it clear that they won’t be able to assist with reduced instalment. Today MFC has contacted me to collect the vehicle, debt busters are no where to be found. I really trusted that they would do what they said they would do, negotiate on my behalf.