I don't even know where to start ...

I don't even know where to start ...
- Order not received within 10 days, no email or message.
- in the end it would be 15 June (received nothing) but I will get it (maybe) today
- suddenly 1 product was not available and I agreed to a two-part delivery
- I now receive an email with a packing slip stating that another product is not included so that I have no use for the first delivery ...
Really dredging that it must be this way, very tiring and always not a good solution.