I want my number bac****

I got into a data contract using my own number that I had from 2005. Now that I've cancelled the contract, they said that MY number would be taken off the network so as to reinstate it as a prepaid number. They said that this process would take 24 to 48 hours - that was on Thursday 13/12/2018. I called in on Saturday 15/12/2018 and the consultant was kind enough to remind me of the 48 hour SLA and said that it would be done on Monday. I told that Monday was a public holiday but she confidently said that they would be working and that the holiday would not halt the process. It's Tuesday 18/12/2018 and I called back to find another consultant who said that the holiday halted the process and it could thus go on up to Thursday. Since when is a week equivalent to 48 hours? Since when do two consultants working for the same call centre give out two different pieces of information? I've had that number for 13 years! My whole life is attached to it. This is a severe inconvenience and I will never sign anything with One2One ever again!