Poor business

We have had the worst experience with a Lady Marlene from Que For Me. Last year my father in law paid her over R26 000 to assist with road worthy and change of ownership we are Are literally been waiting almost a year for her to get this resolved yet every week another excuse, I have requested a refund on the change of ownership that was R4100 from what she has only given a R1000 the other R3100 still not paid and it’s 3weeks now and excuses after excuses please be carefully