Unhelpful and rude

Their sales agent was very rude to me today. She reprimanded me for not putting the correct name on the contract because it wasn't clear to me that I had to do so. So now I have to register again and lose the discount for January. I don't understand how they can be so inflexible. They're the owners of the system, so why can they not go in there and just change the name. They also didn't make it clear that it must be a utility bill to upload, not any proof of address. I'm very disappointed and disillusioned at this service. It this is the way they treat clients then I'm glad that my application hasn't gone through.