stuck

Waited 2 and a half years for a disability insurance company to correct the amount on my benefits. Hired a lawyer back then finally. They paid my backpay for my benefits a week ago, BUT, now they have lost all my medical records. Doctors won't take my money or make an appointment to have my leg appliance replaced because I can't give them my medical records. Called some ( total of about 19 Doctors since the injury ) of my past Doctors to try and get my medical records myself but they say they have purged them because in Texas there is a 5 year time limit that they have to keep them, OR, they say I have to have the procedures done again if I can't come up with medical records when they were done the first time. The disability insurance company says they are looking for my records but it's going to take another 2 years ( my best guess ) to get these jokers to do anything about this, gauging from the fact it took them 2 and 1/2 years and a lawyer getting involved to correct my disability benefit. Timing of when they lost my records is very suspicious too. Can anybody give me advice on what to do next? I feel like I am just sitting here with no idea of what my rights are or what to do about this.  Was able to contact 3 of the 19 Doctors who have said they do still have some of my injury records, but I will need to pay them a fee to send them to me.  Other 16 basically say, they either purged the records because of age limit, or they sent the records to the aforementioned insurance company when the injury happened.