It happened to me too, twice.
Fineco created a spike to catch my stop loss.
I claimed that irregularity to the Fineco Support and they just told me that all was fine... it's like to claim stolen goods from the thief, of course it's all fine to me!
Do not bother with reporting Fineco to Italian regulator CONSOB. I did it and it was a waste of time... what did I expect, that Italian governmental institution goes against an established bank to defend a client who put own money into CFD? no way.
Just save your money and your time by staying away from Fineco, they are a regulated robbers.