Craigywba

Hi, looking for some advice please on my 2010 CDTi 2lt insignia. 2 weeks ago I had a brand new dpf fitted along with all the sensors, new pipes etc. Reason for having it done is because the car reached a point where the car wouldn't stop regaining. The car has covered 132k with full service history. Now since the new dpf and sensors was fitted my car is doing a regen every week. The car is being driven approx 500 miles per week, each day we drive the car at a continuous speed for aver 40 mins. The question I am asking is this regen issue doesn't appear to have been resolved, any idea what could be the issue ???