Processed but not dispatched

I place an order on 21st August 2021 and made a payments aswell, the order was processed but not dispatched, I went to northriding to collect on the 28th but was told they don't have stock but would receive it on Wednesday, I called on Thursday to check why my order was still not dispatched and was told that they still don't have stock I should check on the 8th of September cos that's when the truck will deliver the shortages, bare in mind I have customers who have paid for their good but tupperware is quick to process and take money but can't seem to deliver, I'm tired I'm calling cos they also don't answer their phone, September special is out but i still haven't received my stock which I paid I need this to be sorted cos it's really annoying that I need to follow up with u yet we should be working together..