2 accounts debited for same tracker

I sold my car to my daughter's boyfriend and in Dec , I contacted tracker and advise them accordingly , I was previously insured with Budget and the tracker fee was included in the premium , I contacted Tracker and advised them of the sale of my vehicle.My daughters boyfriend insured through another company and either way , the premium is either included in his premium or he is debited via debit order separately , but either way he pays for the tracker in the vehicle , imagine my surprise on checking my banking account and seeing I was debited R 230 odd for the tracker device , so payment was received twice for the same tracker , I sent an email last week explaining this and asking for a refund of the amount debited in January 2015 and to date have had no response ?