As above

I booked in my Brother sewing machine to have it repaired. The business owner said it must be booked in for a service as well. This was done and the fault that needed attention was conspicuously marked up on the job card by the proprietor of the business. I paid R805.00 when the machine was ready for collection many weeks later. I asked them for proof that the repair had been done and they gave me the piece of cloth on which test stitches had been sewed saying that the technician had checked everything. The machine now has more faults than it had originally and they deny any responsibility on top of which they at first tried to deny selling the brand new machine to me and afterwards started giving nonsensical arguments about the machine's functions. Originally the reverse sewing function would not work and now it has stopped feeding altogether. I am not prepared to hand the machine over for another attempt at their incompetence and have demanded that they refund my money into my bank account, the details of which I gave them.