Hi Fafy,
I would suggest, keep ringing the pharmacy supervisors. They will definitely call you back. From my experience I can tell you that pharmacies do need us. You may have to go little out of the main city. And believe me, you are still not in the worst condition. Think about those whom has to go through h1b sponsorship and lottery. We all worked so hard but still our fate is decided on these stupid h1 visas . And if one does not get visa this year, one has to wait till next year and if not next then wait for another year. So thank God that you do not have to go through all this. Do not think you are alone in this, you are not the only one who is struggling hard, i can assure you,every single one of us is going through same phase so what we need is lots and lots of perseverance and energy, and determination , that no matter what we will achieve our goal. All the best to you.