I do have balance in my phone but I my getting an error that I do not have sufficient balance and the call is not connecting. How do I fix this?

The Lycamobile SIM is set up to intimate customers when the balance reduces below a set level and that is why you may receive this error. However once you disconnect the first attempt and try again, the call will go through as long as there is enough credit. If the problem persists kindly call Customer Service at 122 from any Lycamobile number.