Terrible Customer service - no response to e-mails

My first time purchasing from Absolute Pets online store. The purchase was easy online and no issues. Come to delivery, you receive no notification of if you parcel has been collected from the courier or who the courier is, like other online companies, so I had to e-mail them. My order was placed on the 2nd Aug 10:39, I emailed them on the 6th Aug as no notification of delivery was received. Lynne responded that it would be delivered on the 6th or 7th to which I asked her for a tracking number so I can follow up. My e-mail was ignored. I then found online, on the order, next to the actual product a link to the courier which I went into and it said the parcel was returned but gave driver details. I sent the driver a message to which she phoned and said she had already delivered the parcel on the 6th. However the people receiving the parcel on my behalf said they hadn't received it. They phoned the driver and she said no she hadn't delivered and would deliver the next week, the driver then blocked my number. I kept Absolute Pets up to date and asked them to please follow up and get my order to me or refund if they couldn't provide me with my order. All e-mails to Lynne and Absolute Pets went ignored, they never got back to me or apologised or updated me. The parcel was eventually delivered on the 12th Aug & it was from PTA to JHB. Definitely will be my first and last order. Other online pet stores have outstanding customer service, Absolute Pets is way behind.