Unacceptable service

Mu husband has to have his blood tested every 2 - 4 weeks and I have always used Lancet. Early this year and late last year I paid all the outstanding bills and it was confirmed by Lancet around March this year that all the bills for 2014 has been settled and that I owe them nothing. Now they have handed me over!!! I paid the outstanding money and send the proof to them about 3 weeks ago. Now they cannot find it and I have so send it again.!!! You are pathetic!!! First you confirm that everything is settled and then you hand me over. Do you have any idea what you are doing?????? Go to you statements and go and find that money. WORST WORST WORST service I have ever seen!!!! I will find myself another pathologist to handle my husband's PI. Stop sending the accounts to my mobile, that is my I have what they call an email address!!!