Help!!

What do I have to do to get an online supermarket order delivery to the place we are staying in los gigantes?

Each time I try to put in the post code for los gigantes mercodona reply they do not deliver to this area yet.

Then I tried Dino ( hyper and super) but won't accept my phone number.

It's so difficult and I am tearing my hair out as we are self catering and wanted to cook during our stay in los gigantes.

Any help would be appreciated.