abbs Diesel exhaust badly smoking

[Abbs]

A3 61 plate 2.0 Diesel exhaust excessively smoking.

I've recently had a new turbo and dpf clean as a3 diesel was smoking once engine was warm even whilst stationary (lots of smoke). A few weeks later I gave it a blast and it started excessively smoking again, garage have apparently cleaned excess oil left behind in the exhaust from previous, all seemed fine until the other day I noticed it started to smoke again but not as bad and stopped once the car had cooled down. I'm now wondering if the problem is back and what could potentially be causing this?