Worked for a block paving company for about eight months, in my early twenties. Yes, it is a technical trade (bloody backbreaking too) with a huge difference between ‘companies that can do block paving’ and ‘block paving companies that offer a ten year guarantee’. I worked for one of the latter – had to leave when I was offered a managerial post . . . but just didn’t want it (too interested in partying, at the time).
TBH that sounds like a fairly average job, give or take the presence of a mini digger. I would have thought that you’d have levels staked, boundary footings dug out and concreted in place by now, tho, with substrate laid and compacted. That said, it’s only Tuesday – you’d be surprised how quickly paving can go down. It’s the finishing bits that make a good job; accurate cutting and levelling. If they aren’t paying exact attention to screeding the sand for drainage / run off levels then you really should be worried.
Do you have an outside training provider that you can question? Or have you solely dealt with the company? Perhaps call the adult education dept at the council and see what they have to say? But stick with it – you might be surprised.
If it sucks at the end of the week, kick off and try to get your money back. But always have a realistic expectation of what level of training you can gain from a one week course. Good luck.