Bad quality and customer service

I bought dining room chairs 26/09/2018 after returning the first set as they were all not level when assembled. I was told they only give store credit no cash refund ..which is a ******* .it must be told to customers at the till when you pay .I then took a different set and the one leg broke the 28/10/2018 I sent a email I was asked to send a picture of the broken chair and invoice which I did ..I received no response..I asked and the same sent email what os happening on the 5th November still no response..this is shocking the quality of the furniture is so bad