Shocking Service

Today 21/03/16 i went to canal walk edgars to open an account. I called and asked what information is required to bring with to open an account. When i went there with the information requested they told me that the person who helped me gave me the wrong information. So i had to go home and get the required information. I then went back with the correct information and then was told the service was offline. I then came back 30-40mins later and the service was online. My application was accepted and then was told that i need to go and buy something to activate my account and get my card.. Upon doing so. They told me they cannot give me my card as my ID is not valid (how was my account activated if my id was invalid?) I then went home and go my passport went to Kenilworth centre and they helped me.. I was then told that the person who signed me up spelt my surname wrong. As well signed me up for a 12month edgards account (I was not asked nor told about the different options) As well as he left a few other details out of my application. A lady by the name of Gillian Jane helped me and manged to get me my card. ( A very lovely lady) So now how do i changed my 12 month to a 6 month?