I often see some former co-workers who often tell me I should apply at my old job should I ever sell my business. That happened four months ago and, during that

I often see some former co-workers who often tell me I should apply at my old job should I ever sell my business. That happened four months ago and, during that time, I couldn't find any contact information to apply. I called the company's main number and was transferred to a voice mail of someone who never called me back. I applied online to a different job, explaining the situation, but never heard back. The situation was this: I had two former managers and one co-worker all advocating for me for the one job they knew was available--my old job! I have not been able to get any response from the company at all.