After five years as a customer, I cancelled my fibre (and associated phone) connection with Slingshot in August last year. We had just moved, and I had decided to switch to another ISP, as I was sick of having to deal with Slingshot. (The last move was a series of stuff-ups I had no desire to repeat. The irony here is not lost on me.)
At the start of the next billing period, my email/"my account" access was removed, and the bills stopped coming. Everything appeared to be fine.
Weeks later, I learned that this was not the case: I accidentally* ended up on my Visibill page, to be greeted with an $11 bill for an iTalk line^. Annoyed, I phoned their callcentre and explained the problem. After some confusion, the CSR claimed the iTalk line had been removed, and credited $11 to my account. Just in case, I changed the Visibill notification email to my Gmail address (it had been the Slingshot one cancelled with the internet connection.)
Good thing I did, too. As September drew to a close, I received another $11 invoice from Slingshot. This time I tried the email support. A Slingshot CSR requested cancellation of the iTalk line (for the third time), and applied a credit of $11.
Late October arrived. "The amount due for this month is $11.00". One email later, another credit, and a slightly more interesting reply: "The Italk cancellation seems to be stuck for some reason." Fourth time lucky?
Of course not. I saw this as a failure of the regular helpdesk, so I tried the next step up: social media#. After a pleasant reply, I had another $11 credit and cancellation request on my account. I was not holding my breath.
Christmas passed. Another bill. Another PM. Another cancellation. Another credit.
The bills stopped coming%. I logged into Visibill, and did not see any mention of iTalk in the upcoming charges.
Fast forward to tonight, and once again I found myself accidentally* logged into Visibill. "Current Balance Due $44.00".
TL;DR version: In August 2015, I cancelled all the services I had with Slingshot. As of two days ago (24 May 2016), and despite informing Slingshot numerous times (via phone, email, and social media) I am still being billed for one of those services. (And it is only due to luck that I even know about it.)
*The auto-login address was in my history, as was the one for my parents' account. They had asked me to check their bill, and I selected the wrong history entry.
^Anyone familiar with Slingshot UFB and iTalk may have noticed something strange here. +100 internet detective points if you figure it out. (It's another story in and of itself.)
#I had numerous problems with Slingshot regarding provisioning and things not working correctly. If it was not for the person manning the Twitter account, I doubt they would have been solved.
%Turns out that they stopped coming because the Visibil contact email address somehow ended up empty.
(This was supposed to read sort of like a story, but it looks like a huge rant. Oops. )