Paid twice and service was still cut.

I accidently paid my ex husbands account when i download the dstv app on my phone. I did not know that my phone number was still linked to my ex husbands account after i asked dstv numerous times to change that. So i went to a multichoice branch and explain what happened and the lady behind the counter immediatley stop my exhusbands account. So i asked her what about my R979 that i paid. She asked for prove and i told he but it was paid on their dstv app. Well to make a long story short i gave her prove of the payment. She tild me it wil take two weeks to correct so i had to pay my account again. That happenend on the 16 of december 2019. I never heard from them again. On the 14 of january 2020 my services was cut because according to them my account is in arrears. But what happenend to my money R979 that i paid xtra. Is that money just gone? Where is my money. I gave them prove of the payment that was done on their dstv app.