As long as the Cruz presidential committee has money–and it has more than $6.3 million now–it must return your donation, if you ask for it.

Write:

Cruz for President
PO BOX 25376
HOUSTON, Texas 77265

Note the amount of your toal donation, and send your letter return-receipt-requested. If you have a receipt from Cruz, send a copy.

If you have better uses for your own money than Ted, waste no time. He could transfer some or all of it to his 2018 senate reelection campaign.