Poor service and repair work not completed

I contacted Randburg Appliances who confirmed they could fix a home appliance. Subsequently I received a call from someone who mentioned a different company name, Randburg Appliances confirmed the technician was from the same company. After collecting the unit for repairs, then subsequently missing multiple agreed meeting times the unit was returned. Only 20% of the unit was repaired, when contacting Randburg Appliances I am told to deal with the person who did the work directly. Clearly Randburg Appliances is subcontracting their work without telling clients and in addition is not standing by their 6 month guarantee. I strongly suggest not using them.