I have my mortgage for 4yrs, and have been fixing it every year. At the end of each year I usually get a letter detailing interest rates & giving me the option of going with Fixed or Variable. This year I did'nt get this notification, and now my mortgage is on a variable rate and I want it fixed. I rang PTSB and they have now sent me a list of rates, but also a charge of €100 to change to fixed rate. Why am I being charged €100?