Avilin Appliances - Thieves and Liars

My defy stove gave an error. I called Avilin Appliances to assess. They assessed and quoted and reinstalled the stove after 13 days - a little longer than I hoped but still okay. I paid them immediately after a successful installation. Pity that the same night, the stove stopped working again with the same error! Not to worry though - they had promised a 6 month guarantee. I made them aware immediately of the fault and they agreed to come and collect and repair. This is where the real nightmare started. After many excuses and much back and forth, they finally agreed (in writing) that they would refund me. That was over 3 weeks back now (well over a month since the first engagement). I have subsequently had to pay ANOTHER company to repair the stove which they thankfully did in 3 days. However, it means I had to make payment for this repair twice! Totally almost R4000 (more than the actual stove if bought new)... and the whole ordeal of not being able to cook for over a month and being messed around by Avilin has led to my tenant giving notice too. On top of that all, I have been lied to on more than one occasion. I keep being promised I will get the refund but there one excuse after the next - first the finance lady was attending a funeral, then I had to wait for a Friday as that is there payment run, then they were out of the office, then they had in fact said I had been paid, only for me to realise the next day I had not. Avilin Appliances [and Spencer in particular with whom I have been dealing with) are liars, thieves and I would caution anyone wanting to use their services. I am now in the process of speaking with a lawyer and taking them to small claims court unless I receive payment within the next 2 days (as promised again!?)