Aha, second half of 11ac magically revealed, but 'customer' seems a very off-hand part of the def.
In second part of 32ac, the word is SAIC. The clue consists of only the last four words. No idea about the first part.
I feel apprehensive about assuming that certain clues don't need to be solved because 'there's only one possible grid entry'. If you believed Chambers Word Wizard, you'd end up submitting an incorrect entry for 25dn. The correct version is provided for in the preamble. Who knows how many other traps may have been set?
Can someone supply, allusively if necessary, the justification for the answer to the second part of 19dn? It was an easy solve but I must be dim as I can't see why.
I agree with all who've deplored the wilfully obscure clueing, using devices often barely plausible, e.g. the word meaning CANT. Radix seems to have wanted the puzzle to be insoluble, disregarding the tacit consensus that if a solver is in doubt about a def, Chambers will offer reassurance. Not so here.