ADHD Bitches! Has anyone found a mail order delivery for meds?

I'm so freaking frustrated! I have a prescription for Ritalin, and recently switched to a CVS in Harlem. I dropped by the other day to have my prescription refilled, and they told me to call the next morning. I did. They said it came in and to pick it up on Wednesday. I show up, only to be told they never got it in, they don't know when it's coming in etc., etc.,

I'm so tired of getting the runaround with this! I need my script so I don't wander off into side quests!

Can anyone here recommend a decent company that actually HAS the stuff and would deliver it to me? I don't trust the local pharmacies after this mess.
TIA