a few years ago I received bank letters from the UK , they were postmarked in November and one in December , they arrived in the following March with a bundle of Thai mail , 3 months of TOT bills and likewise UBC bills.
I reported this to Bangkok , our Amphur post office manager came to our house , apologised , gave us a little statuette and a mug , and asked us not to contact Bangkok again , if we had any trouble we were to contact him on his mobile.
A year or so later it started again , no mail for monthe , the wife called him and he told her to get in touch with the local postman and sort it out ourselves.
Customer Service or what !