3M, what did you expect?
That they would take it easy, when you resigned?
That you agreed to work for a dodgy company offering conditions well below, what the mother company (SAS) needs to pay their pilots for doing the same job?
Bad t&c’s gives a highly unstable workforce (Ryanair suffer from that right now), but they don’t like, when you find a better job... therefore they will act in an abusing way.
May be you should never have joined SAIL?