Amazon. DHL not pick up. Solution

Amazon. DHL does not pick up Chronicle of an inefficiency. 31-3-2022 I requested on 31-3-2022 the collection of a return for an item and I received confirmation from Amazon by email with the date of collection 1-4-2022 from 9 a.m. to 6 p.m. I had chosen DHL as the courier. 1-4-2022 I waited all day at home for the DHL courier to come and collect...