Dialdirect bad customer service

Shocking customer service from Dialdirect. Was overcharged from the beginning of policy with them compared to what was quoted. Got charged extra for not having a tracker unit installed when one was installed and certificate of installation sent to them. Tried to more than double my policy installments and after quering it they dropped it by almost half.Claim free bonus was mentioned to me but have never seen it to this day. got hold of call centre who put me through to Thando Makhubu in dispute resolutions dept. This was last year about this time or even earlier who promised to sort out the issues as i wanted a credit to be passed for the overpaid installments. TO date more than a year later i have heard not a word from Dialdirect and issue has not been resolved. Dialdirect must have the worst customer service around,never experienced this situation before.absolutely shocking.