more than 2 months and still no answer

I Bought a microwave and when I got home there was no glass rotation plate, Baldwin has promised to get back to me more than 4 times that I have called and gone there twice with still no prevail or even a phone call to let me know what is going on. the last time I went to the store to check up he was not in, his boss Steven refused to come and see me and just got another salesman to try assist, which just told me sorry they don't have stock. It has been over 2 months which is just ridiculous.