We have a cron job that runs every minute to check the customer's balance. At one minute left the customer receives a warning. The customer can then add more funds or stay on the line until the call is terminated.
However even though the cron works, the call is not stopped and the customer can talk even with a negative balance.
I can so you the related files and answer questions you may have.
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Hi client. I'm expert at PHP and Mysql. Also have many experiences in cronjob. So i can fix your bug which calls even if customer have negative balance. Let's start work with me. Thanks.
Hello Here is PHP expert with 7 years of experience. I can do your project. I hope we can discuss your project detail via chat. Looking forward to hearing from you. Best Regards.