Operators of the facility claimed they were caring for 60 individuals, but authorities discovered over 180 people during inspection, including more than 30 women.
The occupants, widely believed to be struggling with drug addiction, were located in overcrowded rooms lacking working bathrooms or running water.
“Several had been at the alleged unauthorized facility for an extended period,” the department stated.
Gift Skhosana, a former patient at the center, told Newzroom Afrika that chaining patients was “common practice.”
“They chain us as punishment and upon admission,” he said.
Skhosana, who identified as a drug user, added that the facility had helped him achieve sobriety and move past his addiction.
Another unnamed individual said his time at the center left him requiring psychological support.
The couple charged 3,000 rand per month—approximately $182 or £137—to house patients, with nearly half of that amount directed to the church.
Police reported that 14 people discovered at the facility have been transferred to a hospital for medical treatment.
Officials confirmed that 132 people have been reunited with their families.
The couple is scheduled to appear before a local court on Monday.