Saint-Gobain treats long standing clients as ********s

My company has been purchasing Epoxy products for our factory flooring from Technical Finishes SA (Pty) Ltd. for the past 24 months without any issues. Recently Technical Finishes SA (Pty) Ltd. were taken over by Saint-Gobain who has some of the most ridiculous policies I have ever witnessed in business. One of these policies is the complete refusal to supply a Tax Invoice until such time that payment is reflecting in their bank account. This morning I made payment via an FNB EFT into their Nedbank account and after sending them proof via email of a valid EFT I simply requested they send me the Tax Invoice for record keeping purposes. I was not even requesting delivery of the goods and are more than happy to wait until payment is reflecting in their Nedbank account prior to the goods being released for delivery purposes. All I requested was the Tax Invoice in advance of delivery of the physical goods but no, this is not possible until such time the funds are reflecting in their bank account. The fact that I have been dealing with them for 24 months and have always made payment from the same FNB account into their bank account (Also same account despite being taken over by Saint-Gobain) clearly means nothing to them as unless payment reflects immediately their side then the customer is automatically viewed as a ******** who has sent them a *****ulent EFT and they can't "Risk" raising billing via a Tax Invoice as clearly a long standing client who has never once stiffed them in the past for payment is going to suddenly start sending **** EFT's. The fact that all EFT's have Trace ID's and can be verified with the issuing bank seems to be beyond them. I can appreciate goods not being released for delivery purposes until funds are reflecting in their banking account, but to refuse to issue a Tax Invoice until the funds reflect is (a) insanity and (b) shows a complete lack of trust and respect they have for long standing clients.

I respect all companies having procedures / policies, however these procedures / policies should be well thought through and should never make the customer feel they are a ******** who is out to **** the supplier because that is exactly what they have accomplished here!