No way to schedule pickup or delivery of products

I do a lot of orders on Takealot and the service is generally good. I do however have a problem with their delivery and returns service. You simply get an SMS stating they will be there on such & such a day anytime between 7am - 5pm. This means one has to be at home the entire day just in case. I recently logged a call for a return and Takealot again send an SMS stating pickup of the product return anywhere between 7 - 5pm. I then phoned repeatedly, (the system says there are large call volumes and promptly drops your call)SMS's via return SMS, and e-mailed them to ask them to please schedule the pickup on a specific day between certain hours. As expected, the pickup guy pitches up after I have gone out of my way to tell them when to pick the faulty product up. Takealot seriously need to add a field where you can insert a pickup day & between certain hours so that the customer is not totally inconvenienced! Their system makes ZERO allowance for scheduling!!!