Depends on type of data and other laws. If you are a paying customer you can assume your data will be stay in database, until it is no longer required for audits. GDPR allows for anything that is 'absolutely totally required for providing service'.
In most countries you are required to keep payment records for tax purposes for 5 years or more. As this is a business necessity this trumps the GDPR. And since most business involves some kind of payment it's likely most businesses will not actually fully delete the information they have on file for you.
