Audi A4 B7 - DPF - Promazal

Got a4 2008 2.0 tdi and a dpf issue apperead. Got it regenerated but it did not last for long. I found this company -http://pandpauto.co.uk/audi-dpf-removal.html . They are saying that can remove it and there will be no problems in future. Does any one knows about this company or have removed DPF? How is it? Any help much appreciated.