online makro - non response and non delivery

I made an online order on Makro webiste and fully paid on 10 August. On 18 August, Shadrack Manzini from Makro online email advised that they will deliver what they have and the remaining will deliver later when they have the stock. On 20 August, I received some of the items. On 26 August, I send a follow up email to Shadrack and requested for the date of delivery, where I receive no response. On 28 August, I further send another follow up email to online Makro ********** and I also have no response. It has been 20 days and I would appreicated a response and the order to be delivered . Order number MAK925458 and account ********** 2.