Failure to deliver on online orders and poor customer service

Dear Sir I placed an order with Pick and pay online service for delivery on the 24th November between 5-6pm. Order number ********** 736.My order was not delivered. I phoned Pick and Pay and was informed that there was an error and my order will be delivered on the 25th November between 10am and 12pm. The consultant even said he would phone me back to confirm. I did not receive a follow up phone call. I phoned again to enquire about the status of my order. The customer service line said it will be delivered by 12pm. I am still waiting for my order or even for someone from Pick and Pay to inform me what is happening. Why does pick and pay offer a service that they do not deliver on. To date the customer experience has been horrific. I would not advise anyone to use this service. Desmay