Politician Phillip Dexter has issued a lawyer's letter to former Western Cape Premier Helen Zille over what he calls a 'callous and cruel' personal dig about his ex-wife and child. Zille, however, says she has consulted her lawyers and he has no leg to stand on, after the letter insisted that she desist from making further claims about his personal situation, News24 reports. The spat between the two originated from her controversial 'black privilege' tweet over the weekend, which has since been referred to the DA's federal executive council. Dexter engaged with her tweets by calling them 'nonsense', Zille responded, 'Please pay your ex-wife and your joint child what you owe them. I am tired of getting desperate letters from them. When you have sorted out your own privilege (compared to the situation of your ex-wife and child) you can contact me again. Thank you.' In a lawyer's letter shared on social media, Dexter set out the history of the custody battle involving his ex-wife and minor child. 'To our knowledge, our client is up to date with his financial obligation towards the maintenance of his abducted minor daughter as agreed to in the settlement agreement,' Dexter stated through his lawyer. ' ... public broadcasting of these personal issues in the midst of a political debate is a callous and cruel act calculated to cause harm to his reputation and good name.' Dexter said Zille would be required to provide all evidence upon which she based her comments. Zille responded that his ex-wife had been in contact with her for several years and that she had received substantial amounts of documented evidence. 'I am under no obligation to make any of this available to Philip Dexter. I am dealing directly with his ex-wife, who approached me in my official capacity.'