No delivery and no notification.

I ordered a smartphone on 17 May 2020, initially the delivery date was set to 22 May but after checkout it jumped to 28 May 2020. I let that slide. I still don't have my delivery and there's no notification unless I enquire. On 29 May I enquired and got a "will check with relevant departments" but never got back. On 31 May I enquired again and got a "Sorry for the inconvenience it will be delivered on 1June 2020"

It's now 2 and half hours left before the delivery window for the day closes and still heard nothing from them. I have to travel to town to wait for my order.