Cannot unsubscribe from newsletter

I have been trying to unsubscribe from the email service each time I receive these emails. When I enter my email however, it says \Invalid email address"";NULL;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ***;425732;455;28;2;0;0;0;0;2;NULL;NULL;NULL;15/06/23 8:21;15/06/23 7:54;dont want anything to do with Intec want my money ;8,51E+12;nadia;***;poor service delivery and im getting threatening sms to say they will blacklist me i registered in jan and didnt get my study material very *********** no one knows who is responsible no turn arount time too i have send all Tom ,**** and Harry emails no feedback even Anthea .what a real set back .;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ***;864821;847564;18;2;0;1;0;0;2;NULL;NULL;NULL;15/06/23 9:42;15/06/23 7:54;SO LOYALTY IS MEASURED BY MONEY???;7,21E+12;Management ;***;I was disgusted to learn that Amrod have implemented a new loyalty program. Any company who does not spend R50 000.00 with them (ex VAT) annually are now no longer entitled to have their goods branded in house as part of their service. This means that companies who do not meet the 50K criteria are forced to incur additional costs by taking their goods to be branded at another company. Do they realize that small businesses contribute to 30% of South Africa's GDP? <br> <br> They claim \The 2015 Amrod Loyalty Programme;but rather by the Rand amount spent. Imagine if we all adopted this attitude with our clients.<br> <br> """