`100% my experience also.
The Flash warehouse is 1500 meter from my house, actually just 3 street turns away, and for the past 15 months I have had to go pick up each and every order shipped by flash.
They post phone calls that lasted 10 seconds, and which I obviously never received, on their tracking page
I have a return order to Lazada, waiting for pick up by Flash since November last year. In June Lazada refunded me anyway after many complaints.
Shopee never used Flash, until my last 2 orders, which are now sitting at the local warehouse since 6am on 13 October.
Delivery was expected on the 16th, and Shopee has informed me they will be delivered within the 20th, which I very much doubt will happen either.
I refuse to walk, yes that is how closes the warehouse is, there to go pick up the items, since I have done that for more than a year for each and every order, and complaints to the platforms or Flash themselves have zero result