Santander Bank

I have been using Santander online bank to pay my mortgage since 2004. I used online banking as I usually do to pay my mortgage and it never went through and I received a late charge from my mortgage company. The mortgage payment was shown on my online account as being withdrawn on time as it always is from my account. I went to the Newport branch and spoke to both a Banker and Branch Manager. They told me they would look into it. After several calls to them with detailed information on my side, they finally told me there was nothing they could do. And the banker was confused as to what I was asking from her. Very frustrating. I do not trust their online banking and the Newport branch did not help me after a lot of time on my part trying to explain the situation to them. I will be changing banks very soon.