They lack s****

I defaulted on my home choice instalment account which led to an intervention of their third party debt collecting compulsory payment s from my account with my consent,for a period of more than 6months.It so happened theybstopped debiting without any communication which I found strange, I then enquired with home choice with no feedback ad I was kept on hold by one of their agents for approximately 30 minutes to my dismay I then hung up.The issue was left at and now on the 12/12\2017 I get an SMS that I need to pay a huge some of amount.I am angry and disappointed at the lack professionalism and how they don't act in the best interest of the client. I was not contacted in any way to be told as to why they stopped debiting and now this slap in the face. My account was negligently administered and appalled that no follow up done being made to hold for 30minutes.TCF principles are foreign to their vocabulary judging from how their despicable call centre agents behaviour .Not only is revolting but reduces to an unimportant customer.