Most pathetic company to deal with

Since I have opened my account with Edgars last year, I have been experiencing pathetic service, I went to purchase in September last year and they had blocked my account, my details have automatically changed to my ****en name and old address and they have changed my monthly plan to 6 month without my consent on all of these things, when I do make purchases which is on very rare occasions, they call me and question me as if I am committing a crime, It's not my fault that you guys have useless and *********** staff working there, I called Edgars today to find out why my instalments are so high and I noticed that they are charging me for 6 and for 12 months, so that's like 2 instalments, I called an agent and he says that he is not able to verify my details over the phone, who in the hell gave you guys the authority to change my details without my consent??????????????? When I opened my account, I provided all the necessary FICA documents, so why would you change my details. You are a bunch of ******* and to top it all, the most atrocious company to deal with, absolutely pathetic, I hate that I have to deal with Edgars, just now someone called me from Edgars and they are arguing with me on the phone and telling me there been ***** on my account, I am the person that damn called you to update my details coz you useless excuse of a company cant to do anything right, don't call me and harass me at work and as me questions on my own account that makes me look like I am committing a crime.