Check following -
1. that you have RECENTLY consulted
2. A doctor who is a Psychiatrist
3. in person
4. and the prescription for Zolpidem is a hard copy
5. Which you took to a local pharmacist
If not, then you may encounter problems.
But if all above are satisfied, then availability seems like a local pharmacy issue only.
Next Steps
Ask your pharmacist to contact their stockist and get the medicine available for you. Might take some days but it will be worth it for future refill if required. Connect with your Psychiatrist , you will be guided well.
Health Tips
Go back to above bullet points & follow them to avoid any problems. TAKE CARE