Dealt with the Dell call centre in India (is it Bangalore?) by e-mail with no difficulty. (except when they wanted £730 to fit a new screen which costs £300 in the US)
Writing this on an old Dimension XPS D233 which has had upgraded memory, HDD, CD-RW, OS etc and still struggles along.
(Ref call centres, called bank in March and thought I may be speaking to CC.
Me: So what's the weather like with you?
CC: Oh goodness, it is very hot.
Result!)