Enquiry about my cell phone

Good day I have a problem with Vodacom Repairs Hatfield. On the 5th of this month I took my phone there to fix my screen . The service wasn't great I was accused that I was using 2 phones and the insurance won't help me . I told them I only use one phone and is not the second time bring my phone here. Only to find out that the first time I brought my phone in they changed the mainbord. They booked the phone in and told me that it will only take 4 to 7 working days . On the the 13 which was on Saturday I receive a message that my phone is complete but I couldn't go that time . I call them on Monday to ask if my dad can come collect my phone on my behalf and what is required of him . Tuesday my dad goes there only to find out the phone is not being fixed and it's not yet booked . On top of that they **** to my dad that they sent email to me asking if they can fix my phone but the whole point I took it is for it to get fixed . I also put in my mum phone number for alternative contact they start sending her on the day my dad came from them .I call them on the 17 to find out what's going on they ask me if I have insurance with them and on which number while I told them the day I brought my phone in. I'm so stressed because I work with that phone . my Job No. is ***2 please help me with this matter .