Brittany Cartwright‘s calling out her estranged husband on social media … telling followers he isn’t donating money to most cancers evaluation — and, telling Cameo to cope with it.

The reality star posted a screengrab from a video on Jax Taylor‘s Cameo — the platform the place followers can purchase personalised messages from celebs — the place he claims he takes every dollar and donating it to a charity combating most cancers.

Welp, BC generally known as out her former flame with a show seize from the clip … calling him “disgusting” for most likely not donating the cash — and tagging Cameo inside the submit to permit them to know regarding the alleged fraud.

Sources close to the earlier couple inform TMZ … followers of “Vanderpump Pointers” know Jax has donated every his time and money to charity over time — nonetheless, Brittany’s undecided he’s ever donated to this one, and she or he acquired upset when she observed the vid.

Loyalty and honesty — notably by way of charity — are close to Brittany’s coronary coronary heart, we’re knowledgeable … so, this video truly harm her.

We’ve got knowledgeable you all regarding the couple’s acrimonious break up … with Cartwright detailing the big fight that lastly ended their relationship.

The two have navigated their break up — with consideration for his or her 3-year-old son Cruz — over the last few months … and, JT simply recently went for in-patient psychological nicely being treatment. Principally, it has been troublesome for everyone involved.