Non Delivery of paid for goods - service shocking!!

I placed an online order for our company groceries and cleaning consumables: Order: ********** 2 which was delivered 6th April 2018. 2 items were invoiced but not delivered - Sunlight regular washing powder 1kg and Doom Odourless Insecticide 300ml. I noted the shortages on the drivers invoice and then called the customercare number. I spoke with Zanele Ref no: ********** 474 - she said that PnP would deliver the shorted items within the next week. I called again a week later Friday 13th as i still had not received my stock and was assured that it would be delivered on the Monday 16th. Of course, no delivery happened. I called the next day and spoke with Reagan at approx 08:00 and after waiting 20 min was told he could not trace my stock but either the store or he personally would call me back the same day to sort out. It is now the next day - Wed 18th - and i received no call and no stock. I called again this morning and spoke with Nishaan 8:49 and held for 15 min and was again told that they will contact the store and come back to me later today. I am so fed up its ridiculous!! If they are not willing to deliver - then at least just credit my company for the goods not delivered. I am beginning to feel that PnP Online has NO intention of delivering the goods paid for and this is ******* - it is basically theft as the goods have been paid for. I would appreciate it if someone would just come back to me and tell me just what they are prepared to do to assist me.