Lennox Elite Model # CB30M-65-4P

Question

Lennox Elite Model # CB30M-65-4P I had my A/C fixed while back because the freon lines keep hitting each other from the vibration which causes a leak in the line every 6 months to a year and since then my heater does not work. It will not blow heat only cold air. It was working just before repair. I bought the home 2 yrs ago. can you also suggest what I might could do to keep the freon lines from hitting each other? because4 this is the last time they will be able to repair it next time I will have to replace the unit... Thanks