FFS ..... I can't believe this is still going on.
For heaven's sake, post the wretched stupid controller and anything else that belongs to him (go through your house with a fine tooth comb so there's NOTHING he can use as a future excuse) by Special, trackable, signed for, the whole caboodle type delivery (so he can't deny he's never received it) and then, if you can't ignore and/or screen his calls, change both your mobile and landline numbers.
How utterly and totally pathetic that you had to "promise" to have sex with him after Christmas just to get rid. I mean, get real here, what sort of patheric worm extracts a promise of nookie in more than 4 months time ?
How revolting that he should beg for a last quickie for that matter. Where is his self respect, let alone his respect for you ?
It'd be laughable if I wasn't also concerned that this selfish little creep still seems to exert power over you .....
..... why on earth did you not post the bloody PS ? Why didn't you leave it on the doorstep as a 2nd choice ? Why did you let him in at all ?
He treats you like something he stepped in .... so why would anything he said be of any interest whatsoever to you ?
NINE HOURS sounds positively psychotic - it is nowhere near normal and yes, if he refused to leave, you should have called the police. What on earth would your children have thought seeing him there (and presumably hearing all the arguing, begging) ? TBH, if someone "wouldn't leave" for 9 hours, it sounds to me as if you were too frightened to be more assertive and tell him to leave. That's dangerous and totally unhealthy.
None of this persistence is about wanting to be with you, it's about a misplaced sense of pride - I can tell you now that (not even very) deep down he knows bloody well that he has treated you appallingly. But he's done so because you allowed him to and some sick creeps get a kick out of having a compliant woman at their beck and call. He doesn't want you back ..... he simply wants the "control" back, and the convenience (when he chooses) of a quick shag and a meal he doesn't have to pay for himself.
I can't say it any clearer than this - this revolting pathetic selfish tosser sounds as if he could be potentially dangerous. His behaviour is not normal and you need to extricate yourself from it NOW. You blank him, you do not engage in any communication with him, or let him into your home. If necessary, you call the police and get an injunction.
You do not have to take any of this. I am agog that you let him in - why ?