I have just been through the similar issues with them so I eventually cancelled on the 4th of April, so on the 26th May (Friday) they cancelled the data portion of the line (both were supposed to be cancelled on the last day of April) which means I cannot move to a new provider as the actual fibre is still linked to them as they never cancelled this in April when cancelled (this has a 30day waiting period with fibre provider), I have been without internet since friday morning, had numerous calls with different technicians, every one of them promises to call back but they never do, The service is absolutely shocking, I honestly don't know how they stay in business!