PTCL broadband Complaints - low speed

I am using ptcl dsl 4mb, but the downloading speed is 103kb/s. Some time go to 80kb/s and some time kisses 120kb and comes back.
according to my knowledge 4mb has speed of 550kb/s.I did complain too much bt no response

A .salam sir may mirpurkhas say hon or mera phone no 873896 hai. sir may rozana help line per complain register karta hon mager mery complain per koi goor nahi mera dcl baar baar disconnect horaha hai ager lineman ko bolta hon to wo pasay manga hai sir 2mb jo convert 4mb mai hai mager mery pass 1 mb bhi nahi aarahi or download speed hai 40kb ya 80 sir please mera masla hal karain thanks

my dsl speed is low.

i am using dsl of 1mb speed but its speed is 100kbs but my friend also use dsl od1mb but its speep is 250kbs please speed up my dsl connection
thanking u