Overcharged by Engineering Development for service

I wanted to update this complaint to mention that a representative from Engineering Development called me yesterday, but we were disconnected before resolving the issue. I've tried calling back multiple times with no success.

Dear valued customer, Thank you for your complaint regarding the blender you purchased on April 10, 2025. At Engineering Development, customer satisfaction is our top priority, and we take all feedback seriously. We have thoroughly investigated your case and have identified the source of the issue you experienced. We would like to offer you the following resolution options: 1. A full refund of $210.19 2. A replacement blender with an extended warranty 3. A store credit of $210.19 plus 20% for your inconvenience Please let us know which option would best satisfy your concerns by responding to this message or calling our dedicated customer resolution line at 1-800-555-1234, reference number REF-27E5B67F. We value your business and hope to restore your confidence in our company. Best regards, Karen Martin Service Excellence Manager Engineering Development