Struggling to give notice in order to cancel my co

I'm trying to give notice on my contract. It will be finished on 8 March and I want to give notice. I called the call centre last week and they put me through to probably 8 people then when I started complaining because everyone keeps saying he can't halp I got cut off. Yesterday I went to Keywest and they sad they are off line or something and that only Clearwater or Create could help me. This morning I went to clearwater and they said that I cant do it in store and that I had to phone the call centre again, so I am back to square one.