Devilon

I have a Audi A3 1.6 Tdi 2013, in cold weather the car starts with no issues but in any warm weather it takes a good few turns until it starts.
Last year the engine management light came on, and this was fixed by a local garage by having 4 new glow plugs installed, but since then the starting problems started.
I do not want to take it back to the original garage as I feel that they messed it up first time and don't intend giving them anymore of my money.

But before I take it to another garage, has anyone had this issue themselves or does anyone no of a reason why my car is doing this.

And Thanks if anyone can help me out.