CVS review: Double charge

I took a travel covid test April 20, 2021 and was charged $39 at tome of swab with a lab processing fee of $100 to later be charged once processed. When processed I was charge $139.00. I filed a complaint with CVS and was told I would recieve a refund of the additional $39 that was taken out of my account. It has since been 9 months and I have yet to recieve a refund. Claims #: c131702191