Disgusting Service

They are very quick to contact with regards to payment, but I tried calling 2 weeks ago to change my debit details, was on hold for almost an hour, so I sent a mail on the 6th of October, with no response or form of contact. I called again today, finally got a hold of someone, he didn't even say he needs to transfer me or I came through to the wrong department, my "on hold" process started again, I eventually ended the call after 30 minutes of waiting.

I am doing the right thing but getting no joy, noone has time to wait for this!