Online Airtime Purchase

On the 25th of May I bought Vodacom Airtime worth R275 from FNB App. The airtime did not reflect. I then contacted Service Provider who assured me that I should wait a while because their lines were busy . I sent an email through over and above the call I made and they promised to come back. On the other side I contacted my Bank who promised to check and revert. My Bank responded and gave me proof that an amount of R275 went through to pay my Service Provider. Till today, no word from my Service Provider.