Unprofessional service and refusal to be transparent with my accounts

I am extremely disgruntled and upset with Debtbusters service as I have been paying my debt for 4 years now and am almost Debt free , however everything I had a query I had to go to great lengths to resolve it with Debtbusters were they seem to have a pattern were my email seems to be picked up by a different agent each time resulting in me pleading my case and explaining my seat over and over again. When help finally arrives through one dedicated agent it is always followed with a review email were my natural instinct is to rate the service of the one agents service and not the company in general.They also bribe one with vouchers to rate there service.as if they have done one a favour after fixing there mistakes. My recent experience is that they have internal company (3rd party) harassing one with email and calls. Debtbusters even told me they switching from one insurance provider to there own internal insurance provider but refuse to send FULL details of cover and cost instead they request me to sign a link blindly. I have been paying my debt to them for years now and am so close to being debt free but am losing faith in there process as there service is poorly lacking and they not transparent with requests I made to my account after numerous emails as they don't take one seriously instead they have me jumping from one agent to another who doesn't even provide one with correct information unless you persistent with emails and phone calls . When eventually a matter is dealt with it seems that it only last a month or two then they back to there old unprofessional ways My latest