Batts appliance repairs - AEG technicians - not recommended

Batts appliance technician went to fix an AEG extractor in the apartment. While there, they found that 2 stove plates were faulty. I paid for the 2 stove plates as well, to be replaced by Batts. However an independent technician later found that the plates had been 'accidentally' disconnected by the Batts technician, and thus did not require replacing. I contacted Batts through Sunet (Operation manager) who spoke to the owner, Charles - he confirmed they would refund the amount I paid for the stove plates (less handling, admin fee). Numerous emails promising a refund and they have not refunded my money. Do not trust Batts, not recommended.