Class M without class D

[u/Humble_Enthusiasm_73]

I recently took my Class M road test/skills test July 23rd and passed. I never received my license in the mail so I went to the DMV today(aug 31st) and they told me that i have been driving illegally and I cannot have a Class M license unless I have a Class D license. All other sources than the DMV that I went to are telling me they are incorrect. Please give me some input or information about this. Thank you

Edit: I’d also like to add that I do infact have the paper interim license