Poor Customer Service

I'm very disappointed with the service rendered by TFG online. I've purchased clothes on Black Friday and only received 1 item from all 4 items I've purchased. On the 30 Nov I received an SMS notifying that my order is ready to be collected at Markham's Carnival Mall. When I got there a lady assisted and gave me only 1 item advised the remaining items I shall receive an OTP for those items once delivered in store. On the 07 Dec I contacted TFG to follow up on my online purchase and I was assisted by a lady and was told me to contact PARGO couriers because the items are with them. I contacted PARGO and was advise to contact TFG because PARGO they're a frontline for RTT that works with TFG. I contacted TFG again lady named Vanessa assisted and advised my items are with Markham's Carnival Mall and should go there tomorrow to collect the items. Even got an SMS with the reference number to show the store manager. At 18:51 7 Dec I receive a mail saying my order is cancelled due to an operational error. What I fail to understand I called making follow ups no 1 bothered to call me regarding my order and all of a sudden there's an error. When I check the website the items I ordered are in stock. So I don't understand why my order is cancelled.