Gave my internet away

I had an issue this Sunday where my fibre had gone down. To which I contacted my service provider and they had logged a ticket with Vumatel to come and fix it. They eventually came on the following Tuesday and repaired it during the day. After this, my line was back up and running but it now said that I do not have any internet contract assigned to this line as it was given to someone else's line . I contacted my ISP again who confirmed that Vumatel would be in the next day to rectify this problem. No one came. I called again today and they said they would send someone before 12 as i would be busy for a while. At 11 I call as no one has arrived and they say they will send someone after 3 to which I agreed and said it would be fine. I call again at 5 and apparently no one was coming as I'm not available after 12. All of this waiting, for a problem you caused and apparently don't view as priority. It's 7pm and still nothing. How is this okay? I work from home so I had to buy data which is almost the same price as my internet bill. I pay that bill so I don't have to do this.