I volunteer for an agency and use a mobile phone. This company was constantly phoning. Yesterday afternoon I called the business from a regular phone to ask to be taken off their list of callers, but a person who answered was mean. I tried more than once, but the rep said they company already had the phone number I called from. I begged to differ, but then they hung up. I tried once more. The person told me that there was no supervisor and shut me down.