Mine was just the general service and staffing of them. took 12 weeks to switch us over from halifax when was told it would be 3-6 weeks, rude staff that don't have a clue what they are doing and when we switched over they said they would meet our 200 overdraft facility but they never and have said to get an overdraft i need to send a full months statement from my old bank which shows me 30 days in credit ??????? if i was 30 days in credit i wouldn't need an overdraft ( hench the bank or its staff without a clue).
Good luck with your complaint i think we'll both need it.