RETURN DATE NOT ADHERED BY COMPANY

I have placed an order for an incorrect item, same day Thursday the 6th I filed for a return which has a calendar where one can choose their date and I have chosen the closest date which was Sunday the 9th. I waited the entire day no driver came to collect, yesterday Monday the 10th I enquired this on their WhatsApp the agent Keia did not have any resolution everything was going to be escalated today Tuesday I had contacted their customer service and unable to reach anyone. Horrible customer service