Incomplete consultants

So I was contacted about almost a year ago fir a new dish as they received3mt details from DSTV and cording to the POPIA act they are not allowedto give out personal information about any person. Long story short...I changed from debit order to EFT and sent all POP through to them, now all of a sudden they can't trace my payments and they are sending me threatening whatsapp messages for payment.

Yet I received a confirmation email from them thanking me for the payment

Good Day

Thanks for contacting us! Your request (***) has been received and is being reviewed by our support staff.

A help team member will be in touch with you shortly.

Regards,

On Air TV Billing

So now what I do as their agents don't allocate the payments.

I feel like laying a complaint against them and DSTV for sharing personal information without my knowledge