maryland speed Hasn't shipped my items Hollywood Maryland

I ordered 2 items. (1) slp loudmouth exhaust for 2004 pontiac gto on october 23 2017 (2) slp loudmouth headers for 2004 pontiac gto on november 28 2017. Branden continues giving me the run around on my order. However ive called slp directly and they told me they have the slp exhaust in stock and ready to ship. The headers are discontinued. I call every week and only get a voicemail. When i send an email wondering when i will receive my products, Branden emails me back saying that i should have a tracking number soon. Its been over 3 months and counting. Branden claims they do not offer a refund. This is totally ridiculous and unacceptable.