The worst "customer service" from Cell C

My wife recently passed away and had an Cell C contract, shortly after I phoned and notified them on 084 135. I was informed to sent an email to *** but received no confirmation or any kind of communication. They keep sending SMS's that the account is in arrears. Tried phoning 084 135 to try and speak to someone that can assist me, the general answer is that the so called department that works with this kind of query only works on email. I find that very strange that a cellphone company have departments without telephone numbers. The same so called department never even confirmed that they received my email. After a lot of shouting I manage to speak to two "supervisors" namely Duduzile, who was suppose to call me back with a contact number and never did, and Allen who had the worst attitude regarding client service not to mention the five consultants I had to go trough in my quest to find some answers. When I tried to complain I had to hear that the complaints department also only works on emails.