"This unprecedented development in this organisation is bound to disturb the positive trajectory which the company was taking and starting to enjoy.
"We have been through this unfortunate experience before and we remain worried as it causes a myriad problems of instability and retrogressive mud-sliding.
"We have taken the initiative to approach your esteemed office so that you can intervene and find a lasting solution to the problem that is in our midst," the workers said in their letter.
In a letter to Information Communication Technology permanent secretary Sam Kundishora, Dhliwayo said the board was being run unprofessionally and to the detriment of NetOne.
"Please accept this letter as my formal resignation from NetOne (Private) Limited's Board of Directors with immediate effect.
"The reason behind my resignation is that the Board is currently being run in an unprofessional manner which makes it very difficult for me to render my services and responsibilities in a professional objective manner," she said.
Dhliwayo was the chairperson of the audit committee and is said to have been miffed by the "irrational and unilateral" decisions by some board members to order more audits after the first one - which sources say prompted Muchenje and other executives to raise a complaint with acting board chairperson Susan Mutangadura last week.
"Management's view is that these audits are currently disrupting and negatively affecting NetOne's commercial turnaround which to date has been quite successful.
"To evidence this, under current management, NetOne's monthly revenue increased by 977 percent from $9,9 million in February 2019 to $107 million in December 2019.
"Unfortunately, due to the disruptive impact of these audits amongst other disruptive interference from some board members, our monthly revenue for January 2020 for the first time since February 2019, went down month-on-month by 6 percent - from $107 million in December 2019 to $102 million, which is not in line with our shareholder's expectations that we increase our market share from 15 percent to 40 percent in 2020," Muchenje wrote to Mutangadura.
"The audit function, though important, in management's view does not equate to or result in effective oversight and management.
"The audit function cannot be used to substitute effective oversight and management as is the case now," Muchenje's letter said further.
