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Lol cheers all. I don't object to them striking so much if only they tell me what's going on!
Although incidentally it does seem all a bit odd...they're not providing an efficient enough service, so the company loses money, so the staff go on strike for more money, hence providing a worse service, and losing the company more money...
Maybe if they had a big push and all worked together to get the post back on track then they'd get paid more.
...just an idea!