Poor Communication and Bad Service

I had 2 claims under Budget Insurance and they sent me lifetime guarantee letter for both claims and now that I want to use that no one is willing to assist me.

I sent 3 communications since last month with the issues I am experiencing with the car which is definitely caused by the claims I have put but all I get is someone will be in touch and even this day I have not received any feedback maybe because I am not with them anymore which is also not my fault as they increased my premiums to high prices even when both those claims were not my fault which lead me into getting another insurance I can afford.

It has been more than 6 weeks and some of the issues need immediate attention so this guys must call me and make arrangements as I want my car to be attended too as per our contractual agreement I signed up with the,m, this is very low coming from the guys I even recommend to friends and colleagues as I did not experience any hustle during claims but only when it comes to guarantee issues they don't want to assist.