auto and truck electronics sent abs unit for rebuild didnt work sent it back jerked around for 6 weeks via many phone calls and e-mail didnt work again, Internet

i sent an abs unit to be rebuilt, they sent it back and it did not work. I sent it back and they kept it for 6 weeks. When i called or sent e-mails i was told they were waiting for parts or it w.as being worked on. They would say it would be shipped by Mon. Then it would ship on Friday. Then they ran into a problem it would ship next week. I was jerked off for 6 weeks and when i received the unit back it did not work and i had the same error codes as before i sent it. When i checked my i nternet club i found that other people have had the same problem with this company.