How to retrieve a spreadsheet with the submissions I deleted?

Also I was wondering how to retrieve a spreadsheet with the submissions I deleted?

Unfortunately, deleted submissions are not recoverable. Once you have deleted your submissions it is also deleted on our system. 

I checked your account and it is under the Silver plan subscription. I suggest to not delete your submissions because you have an unlimited storage submissions and please take advantage of it. 

If you have questions, please contact us again. Thank you.