I have never seen such a terrible Computer System

I have been a customer of the old Lloyds TSB share dealing service for many years. The move to the new "Halifax" supported system has been awful. I have two accounts with them an ISA and what was a nominee account now just described as a share dealing account. Since the move I have had to communicate with them almost every time a dividend has been paid to me. Initially the dividends were being paid to the old share dealing service as that's where the shares resided on ex dividend day. This month dividends have started being paid to the new service. So far dividends to my ISA have worked ie. they have been paid into the ISA account and then transferred to my Current Account. The "Share Dealing" account has been a different matter. The first dividend I received disappeared from the share dealing account but didn't make it to my bank account until I chased it via their chat system. I have now received two more dividends into my share dealing account. As the first just sat in the share dealing account despite the setting being "Pay dividends away immediately" after three days I manually transferred it and the new dividend to my current account. This morning I logged on to find that they had reversed one of the dividend payments without any explanation. DO NOT SIGN UP FOR THIS SYSTEM.