Can I ask for a refund if the support does not respond properly?

I have been trying to communicate with support because the website I purchased has one or another error and I have not been able to solve it, could you ask for a refund?

It would depend on how long it has been/how they are not replying properly, and what the issue is exactly

Hi, Depending on Errors. In case original item any issue then you can ask to support. Then you can wait minimum author response time. After that you are eligible refund. Then you can contact to Envato support.

In case any issue created after your code changes. there is no issues in original item. In this situation author not provide any support or refund. Because Customization and installation not included in default purchase.

In This situation authors charge based on your requirements.