Line cancelled

I tried to cancel my adsl as we got Fibre in the neighborhood. Instead they canceled both the adsl and the voice line. (they are on the same number). That same morning I picked this up and phoned them back. They claimed it would be reversed. This didn't happen. Each time I phoned they said it would be fixed. Eventually I called the sales department who said it couldn't be reinstated because of arrears, of which I was not aware. I paid this immediately. It still was not reinstated even after the 24 to 48 hour time frame. We phoned again, they then said it was in arrears for the next month (you pay upfront), so I paid for a month ahead, for both adsl and voice line. It still was not reinstated again after the 48 hour time frame. We phoned again only to be told we have to put an order in for a new line, (the first time I am hearing of this) as the line was canceled. This is a business line. I cannot do card transactions or get phone calls. This is completely ridiculous, and I am owed money by them now.