Quality issues with MindUniversity product

I've received an email from Richard Lee at MindUniversity offering a partial refund, but I believe I'm entitled to a full refund given the circumstances. The jeans was clearly defective from the start.

Dear valued customer, Thank you for bringing this matter to our attention. We at MindUniversity take all customer concerns seriously and are committed to ensuring your satisfaction. We have reviewed your complaint regarding our sweater and have initiated an internal investigation (Reference: REF-33501018). One of our specialists from our Support Operations will be contacting you within the next 14 business days to discuss this matter further and work towards a resolution that addresses your concerns. We appreciate your patience and look forward to resolving this matter to your satisfaction. Sincerely, Mary Lewis Senior Customer Representative MindUniversity Customer Relations