Data and call services may face disruption from Wednesday as the Private Telecommunications and Communications Senior Staff Association of Nigeria on Monday insisted on a three-day warning strike. The General Secretary of the association, Okonu Abdullahi, told our correspondent in an interview on Monday that its members were embarking on the strike to protest arbitrary sack of workers and casualisation. He said subcontracting or outsourcing which had bedeviled the industry could no longer be allowed to continue as it had shortchanged workers. He said, “As we speak, all indications are that we should be going on a three-day warning of industrial action on Wednesday, 16th June 2021, as none of our demands have been met. “We have tried speaking to the telecommunications companies at different times, but we met with a brick wall.” The union had in a statement issued on Sunday said that it would mobilise its members for a three-day warning industrial action beginning midnight on Tuesday (today).