Useless staff that do not do the job assigned

They handed me over for accounts that should have been canceled in 2017, i have been blacklisted for them not doing the job they where supposed to do.

Now I am sitting with bad dept because the can not cancel a line.

I did speak to someone in the beginning of the year 2 years after I canceled and only heard from them for the first time. And I explained the whole thing to the lady but still nothing has been done to correct it.