1-star rating is more than they deserve

Since Fedex changed their structure to try and reduce employee numbers and make everything digital it seems competent people have left in droves and we their customers are the ones suffering. We've had a Fedex account for over 2 decades but of late we prefer to get our regular forwarders to engage Fedex and charge us a premium rather than using Fedex directly. The extra fee we pay is more than made up by not having to deal with Fedex. Occasional Fedex will clear a shipment instead of doing a handover and then the problems start. Incorrect invoices, no invoices, clearance on the director's personal name instead of the company name, duplicate accounts and so on. Should they insist you pay on a proforma before getting the final invoice rest assured that they will hound you to pay the final invoice too without crediting the proforma or amount paid. Where invoices are never supp**** somehow it's your fault. There's nothing on the proforma to say it's not the final invoice. According to Fedex you are supposed to know by the invoice number sequence ? Really ? I have emailed them and told them that unless I get a response to my detailed issues with my account I would be taking to social media and here we are. Clearly their masters have zero interest in fixing issues since we customers are dumb and will keep using them.