DPF Refeneration/EML won't go out

[Ajw72]

EML came up on dashboard a few weeks ago..independent vag garage said the exhaust pressure sensor needed replacing - had this done but 10 days later the light came back on .. Took it back to be sorted & was told sensor was fine but that DPF was at 59% so needed force regen .. Picked up the car today,drove 3 miles & the light has come back on!!!!! - 56 plate 2.0 TDI Sport 170 .. Has cost me £250 so far ...anyone had similar probs?? ..all comments welcome.