Ignored again, shouldn't have to complain

I app**** for a foreign currency account in December which I received an email after over a month and numerous calls that it had been approved but the attachments were in word format. I asked if this was correct no response. I also requested this account be linked to my existing account in an email and a couple of phone calls. I was advised someone would call me. That was in January as you can imagine April is approaching and no response at all. There was an out of office response from the lady above but I had ccd her superior and two other individuals who were on the email I received. I have been unable to use this account as I have no access to it. I receive statements with a zero balance but no one responds to my emails or can assist me on the phone and I will not waste any more of my airtime on them. Today I sent the last email I will ever send to these people. I mean the same thing happened with a device I app**** for last year only got a response after posting it on Hello peter last week. I shouldn't have to do this, it has to end.