A week after hiring Malibu psychic Aiden Chase to replace Spencer Pratt as her business manger, Heidi Montag announced she'll go it alone.
"I have decided to part ways with Mr. Chase both as a manager and as a psychic and will scrutinize my business decisions more carefully in the future," Montag, 23, tells PEOPLE. "I will now be managing my own career as a strong and independent woman."
Montag says that she had worked with Chase as her "intuitive healer" for a month after her 10 plastic surgeries in one day before deciding have him take over the job that had been done by her husband Pratt for five years.
"Unfortunately recent behavior by Mr. Chase on set of both Just Go With It starring Adam Sandler, Jennifer Aniston and Nicole Kidman and [on] The Hills have made me question this decision," Montag says.
Montag didn't elaborate.
In a statement to PEOPLE, Chase responds, "At this time, I am not aware of any change in my business relationship with Heidi Montag" beyond Internet reports.
As for his behavior, he denies reports he crashed the set or tried to poach Audrina Patridge as a client.
"Heidi invited me to the set of Just Go With It and the terms of our financial agreement are in line with standard manager/talent agreements," he says. "I spoke with Audrina Patridge briefly when I was on the set of The Hills with Heidi recently, but never discussed being her manager."