Echoes of Pipex
It's always the way. When young and hungry, the service is amazing. Then as each time they get bought out, the service gets worse until it is a shadow of its former self (I am talking about Pipex primarily but also tsoHost)
Currently I still have several websites with tso and also my primary email, but for the latter I'm strongly considering a migration to either Office365 or Google, simply for the fact that I can never totally rely on tso's mailservers.
To their credit, though, their ticket support is excellent and they do try very hard.
But as Paul Herber says, websites can be up and down like a tart's knickers sometimes.