redesign 18 slides in pptx

I need an experienced designer to help me redesign 18 power point slides. these sildes are designed previously by another freelancer, unfortunately, the slides designed in adobe illusterator (.ai) and when it is exported into pptx, all arabic text got reflected (wirttin in backword). I have tried all possible software with no luck. Thus, I need the same design for the slides but in pptx file format.