Santander bank branches Nationwide

 I opened my acct with Santander Bank in April 2017, they have been doing this since that time, double charging me, and then charging me with insufficient fund fees, I went to the merchant, he also proved that I did not make these transactions on certain days, and showed me proof, told me to tell my bank to call his bank, which they did not! They gave me a provisional credit and then reversed it, stating they found nothing fraudulent. In the meantime I wrote out checks including my rent, I told them that. Which means I will have more insufficient fees on my acct! They might assume this is not serious, it is very serious and believe me, I have written to everyone including , I R S, I feel all their branches should be thoroughly investigated as I am not the only one they have done this to! Wrong person to play with, that's my money, not theirs! Sincerely, T White