Packaged a guitar. Filled in all the weight and size details and was within limits on stated on line. Paid and confirmed my local post office as suggested on site. Took it to post office Bow Lane but they refused to take it saying it was too big. They sent me to Sinderland who also said it was too big but then we’re much more helpful and accepted it. Crazy and time wasting system advising post offices and times that then refuse the parcel.. I wasted two hours after they took my money. Lady at Bow lane was particularly unhelpful and dusmissive.m and gave me Oarcelforces number but said they rarely answered !!