UPS South Africa received my package from Hong Kong *** They sent me an email 3 days ago and also a bill to pay for the importation fee and their service

UPS South Africa received my package from Hong Kong *** They sent me an email 3 days ago and also a bill to pay for the importation fee and their service. However, to date there has been communication whatsoever Their telephones go unanswered the whole day. Disappointing!