What is the ruling on Friday prayer in a mosque where three muezzins successively call the adhan via loudspeaker, and is there any basis for this action?

Repeating the Adhan three times on Friday is an innovation (Bid'ah), for Friday has only two Adhans: one that existed during the time of the Prophet, peace and blessings be upon him, and the second added by 'Uthman, may Allah be pleased with him. If one finds another mosque besides the one where this innovation is practiced, it is better for him to go to it, as a way of shunning the people of innovation. However, if he does not find one, he may pray in it, and there is no sin upon him. It is incumbent upon one to clarify the correct practice to them and call them to it with wisdom and good admonition.