Some of the absolute WORST customer service I have...

Some of the absolute WORST customer service I have ever received. It took 6 phone calls and numerous emails to place an order. Then it was the wrong part and I needed to send it back. Was told I would get credit and the new part was charged and sent. OVER A MONTH LATER AND STILL NO CREDIT!! Tried calling 10+ times, leaving messages, emailed 3 different people 10 times!!!