Won't fix their mistake

We are moving house and we are trying to get the service to move at the same time. Unfortunately we had to delay our move and we communicated it to them by calling their support. The service for the current address was supposed to be cancelled at the end of April but they decided to cancel the service in the beginning of April. I first spoke with a lady who was very helpful and agreed all processes were followed and the cancelation should not have happened and agreed to escalate this for me. I then later spoke with a very rude person called Ria but she refused to give her surname and told me that she will not guarantee that my link will be restored. She also refused to let me speak with her manager. I am of the opinion to cancel all dealings with home- connect and as I am a network engineer I will ensure that all of my, friends, family customers cancel or steer clear of Home- connect