Why lie to get a sale

I got a call from an outsurance agent 2-3 weeks ago asking me to refer someone and if they should sign up I would receive R400. I then referred my husband who signed up, as my husband was unable to speak to the agent on the phone I signed up for him by providing all his details which wasnt a problem then. The man then promised that I would receive the R400 as a discount on my policy at the end of September where I will then be able to cancel my policy on the 2nd October and add it to my husband's profile which I agreed to. I then got debited on the 03/10 and inquired this. The woman I spoke to explained something about 7 days between debit dates which the first man hadnt which is frustrating as he's created unrealistic expectations. I then called earlier to update my banking details where an Indian woman told me that outsurance's policy has changed in the last 2 weeks without sending clients'notifications and that I couldnt update my husbands banking details to ensure that his account could get debited at the end of the month.

Agents are in such a hurry to get a sale to get your money that they lie to clients on the phone but cant help you when you need to update information???

What can outsurance do?