Bad service

Well I am very disappointed on the 27 june I was offered a loan I asked can I increase my amount the lady said yes. From there I have problems with my bank. The take debit orders when it suits them. I complained no one comes back to me. I complained on hallo Peter they phoned me once and couldn't answer my questions. I've been ****med with 3500 I went to the bank and signed papers. Nothing no word. Now there is no sign of a loan on my name but they take. The money. I can't get a loan cause my salary isn't paid in once a month. There is 20000 going thru my account. But that doesn't say anything. I was offered a vehicle finance. Sorry we don't see your income. Everything in my account is my income. What does a person do if you don't get any answera