Still trying to **** their customers

So...I FINALLY received my cash out after a long and tedious process. Since then, whenever I snap a slip I get the response that I never uploaded the till slip. I have been snapping for years now and NEVER have I not submitted my slip. Finally I receive a response that thy are having trouble and I need to upload onto their website. , which is not practical as you have to scan your slips. I have taken screenshots to show that my submission was successful. This has only happened AFTER i received my cash out. I really don't the time nor energy to continue with this fight. It's ridiculous, really