I registered for the Diploma in Paralegal Studies in 2019

I registered for the Diploma in Paralegal Studies in 2019. I completed my studies in 2021. Since then it's been a never ending struggle to get them to send my Diploma. I send emails every week and get no response what so ever . I call them only to get sent from pillar to post. It has now become a desperate situation as I need the actual Diploma for work .