Frustrated with Academic Achievement Institute's lack of response

An update to my situation: I've now spoken with three different representatives from Academic Achievement Institute, and each has given me conflicting information about how to resolve the issue with my t-shirt. This is extremely frustrating.

Dear valued customer, Thank you for bringing this matter to our attention. We at Academic Achievement Institute take all customer concerns seriously and are committed to ensuring your satisfaction. We have reviewed your complaint regarding our jeans and have initiated an internal investigation (Reference: REF-324450BB). One of our specialists from our Resolution Center will be contacting you within the next 12 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, William Thompson Support Team Lead Academic Achievement Institute Customer Relations