Hi Yop
1) If you fixed last October, you still have 2 years and 4 months before you might lose due to the sale to BoI.
2) I presume you don't have too many years left on the mortgage, so you are mainly paying off capital, so your balance will be a lot less than €70k when the fixed rate is up.
3) let's say that the balance is €50k in 2 years and 4 months, and that BoI is 1% more expensive than KBC would have been, then you will be losing €500 a year. Not nice, but not quite being "goosed" either.
4) You should ask for a break fee. It might be zero as Stitcher's was. In which case you could break out now and fix again for a longer term.
Brendan