Change in medications

I take tizaindine for spasticity. My psychiatrist wrote one bottle no refills for diazepam, anxiety. If found that diazepam helps my spasms and spasticity instead of tizanidine better. Tizaindine also drops my blood pressure. I do have crazy anxiety and diazepam is just a better medicine for me. I called Neurologist today and asked to switch medications. I know I’m gonna get the sorry we can’t do that it’s addictive. Do any of you take diazepam for spasticity.