Poor service from British American tabacco

Very poor customer service when you call into the call centre they are so sympathetic and apologetic but it seems that is where the service ends I have been dealing with them now for over a month and every time I call in I get promised that they will get the my problem sorted out asap and I get given a timeline of between 4 to 5 days but that never seems to happen as it's going for 6 weeks and still no one has contacted me back or sorted out this issue.

This is really poor service from such a big company