Linen crisis for reception

I went today to order tables for the head table that the venue does not have, as I was showing on my phone pictures of the venue for her to see where we wanted the tables, I looked at the linens in one picture and realized how short they were. The lady helping me said I needed to call the caterer ( the venues in house service). Well the answer was they did not have floor length nor round. The venue has 72 inch rounds and cocktail tables.
I still remember being asked at the tasting what color linen we wanted, I also remember the sales person for the venue said the caterer had all the linens too. They failed to mention they were not floor length or even were made for the size and shape of the tables. I am 3 weeks and a few days out. What can I do? Please tell me what is a great linen to purchase that is fairly economical and will not be so wrinkly. I have heard crinkle cut is great. It’s been a nightmare but pushing through. I am not upset but was counting on the linens in our budget.