More info is needed to know why 3 attorneys did not want to take your case. I suggest you continue to look as you have serious injuries and potentially a negligence claim based on the limited information provided. Use the Avvo "Find a Lawyer" tool above, or ask me for a referral if you are interested. Good luck.
The above is general information only and is not legal advice. The information provided does not form an attorney-client relationship, and should not be relied upon to take or refrain from taking any action. I am not your attorney until we sign a retainer agreement.
This has the potential to be a good claim, but you need to immediately request in a certified letter RRR that they preserve any video that was taken at or near the time of the occurrence. If it shows that the employee saw the customer put the pipes at that location and that it created a danger, they had an obligation to do or say something in a timely manner that would have corrected the condition. It is hard to believe that given your injury that no experienced attorneys would even investigate.
Contact other personal injury attorneys - you have a serious injury.
This is not intended to be legal advise or as legal representation. I am a California personal injury attorney . Be aware that every state has its own statute of limitations; and statutes & case laws that govern the handling of these matters.