No one answering 082155

I am not sure how I am able to dispute a data related query if I am not able to get through to a call agent on 155 for more than 20 minutes! ! Eventually a lady answered and could not help me (even though I called the correct division) and put me through to accounts which I waited even longer! Only to have the call answered by another lady who advised me that I was not through to accounts! I had already been waiting for 30 minutes! Absolutely ridiculous! no resolve whatsoever! Feeling frustrated. And to make matters worse the second lady put me through to the wrong division and the call got cut off! So now I am expected to go through this system all over again! Might just be easier to move to another service provider? I sincerely hope that somebody calls me back URGENTLY.